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WO1996037021A1 - Laser a solide pompe par diode laser - Google Patents

Laser a solide pompe par diode laser Download PDF

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Publication number
WO1996037021A1
WO1996037021A1 PCT/EP1996/001251 EP9601251W WO9637021A1 WO 1996037021 A1 WO1996037021 A1 WO 1996037021A1 EP 9601251 W EP9601251 W EP 9601251W WO 9637021 A1 WO9637021 A1 WO 9637021A1
Authority
WO
WIPO (PCT)
Prior art keywords
solid
diode
diode laser
pumped solid
state laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1996/001251
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German (de)
English (en)
Inventor
Keming Du
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of WO1996037021A1 publication Critical patent/WO1996037021A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/02—Constructional details
    • H01S3/04—Arrangements for thermal management
    • H01S3/042—Arrangements for thermal management for solid state lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode

Definitions

  • the invention relates to a diode laser-pumped solid-state laser with at least one rod-shaped or disk-shaped solid serving as an active medium and with diode lasers whose emitted radiation is irradiated into the solid, reflecting elements being used for beam guidance and / or shaping.
  • diode laser beams are characterized, among other things, by the elliptical beam cross section.
  • the large axis of this elliptical cross-section runs perpendicular to the pn junction of the diode structure (also referred to as the fast direction), while the small axis runs parallel to the plane of the pn junction (also referred to as the flow direction).
  • the emerging radiation in the direction of the major axis i.e. perpendicular to the plane of the pn junction or to the active layer shows a high divergence, with a beam opening angle of up to 90 °, while in the direction of the small axis this divergence is only about 10 °.
  • an efficient pumping of solid-state lasers by means of such diode lasers crucially depends on the suitable guidance and shaping of the diode laser radiation. Furthermore, the achievable laser properties, such as the beam quality and the output power, are strongly influenced by the effective dissipation of the heat which does not contribute to the laser process.
  • the gain or gain distribution can be optimized depending on the application by the different focusing, but this requires focusing components, such as the elliptical or cylindrical mirrors, which increases the construction costs.
  • the present invention is based on the object of specifying an arrangement of a diode-laser-pumped solid-state laser in which, on the one hand, the radiation emitted by diode lasers can be coupled into the solid-state medium with a high degree of efficiency, in which others, the heat loss can be dissipated in a simple manner and which offers a great variation in structure, but nevertheless leads to a compact structure.
  • a diode-laser-pumped solid-state laser in that the solid body is enveloped by a glass or crystal enveloping body which is transparent to the emitted radiation in the radial direction of its axis, the outer surface of the enveloping body being divided into at least two areas , one of which forms an irradiation area for the emitted radiation and the other area serves as a reflection surface which reflects radiation passing through the enveloping body onto the solid body.
  • a specially shaped glass or crystal envelope preferably in the form of a cylinder or cylinder section, is divided in its outer configuration in the circumferential direction into individual areas or surface sections, these sections alternately providing an irradiation area for the emitted diode radiation , which is coupled into the body via these surfaces, and reflection surfaces form.
  • these reflection surfaces serve to dissipate heat loss that arises within the enveloping body through thermal conduction to the outside environment. It is evident that a simple component is obtained in this way, with which the one defines the diode laser radiation for pumping the solid body to the solid body rod, on the other hand heat dissipation to the outside environment is achieved.
  • the individual surface areas can be dimensioned differently in terms of their extent and in the circumferential direction of the enveloping body.
  • the above-mentioned dimensioning and profiling possibilities with regard to the enveloping body are particularly advantageous with simple means in that the geometry of the enveloping body can be adapted to the different beam cross-sections of the diode lasers, as explained at the beginning.
  • the enveloping body is preferably constructed as a cylindrical part with end faces delimiting in the axial direction, which are then totally reflective for the diode laser radiation propagating in the enveloping body.
  • the diode laser radiation is radiated into the envelope body in the form of the irradiation regions of the envelope body and guided to the solid body; Radiation, which is directed towards the end faces of the enveloping body due to the beam divergence or the reflections within the enveloping body, is reflected there by total reflection, so that no losses due to radiation emerging from the enveloping body occur.
  • the enveloping body is preferably constructed symmetrically to a plane that contains the axis of the enveloping body. This ensures that the solid body is pumped uniformly from the different directions by the radiation from the diode laser.
  • the reflection surfaces are designed such that they focus the radiation onto the solid body.
  • the reflection surfaces are dimensioned and curved such that they preferably focus the radiation that is radiated into the enveloping body over the respective irradiation area that is opposite this reflection surface.
  • the diode lasers can be dimensioned such that their beam cross section approximately illuminates the cross section of the solid body, so that almost all of the radiation from the diode lasers impinges directly on the solid body rod.
  • Such defined illumination can, however, also be achieved in that the surfaces of the irradiation areas focus or expand the radiation of the diode laser in one direction or the other (also depending on the position of the elliptical beam cross section of the diode laser) by means of a defined curvature .
  • individual diode lasers can be combined to achieve so-called diode laser arrays or diode laser field arrangements, for example to linear field arrangements in which the beam exit windows of the individual diode lasers lie on one line, or else to achieve higher powers and power densities also for multi-dimensional field arrangements, ie for those field arrangements in which several linear laser diode arrays are in turn combined.
  • the irradiation areas can be chosen to be relatively large, which can then be uniformly illuminated with such diode laser field arrangements or whose radiation is uniform over the each irradiation area is irradiated into the enveloping body.
  • the size of the irradiation areas is then selected to be approximately the same size as that of the reflection surfaces.
  • an odd number of irradiation areas is selected, in which case, from the point of view that the number of reflection areas corresponds to the number of irradiation areas and these each have the same size, that means that there is symmetry with respect to a plane which contains the axis of the enveloping body, the preferred construction already mentioned above can be achieved, in each of which an irradiation region is opposite a reflection surface. So that the outer geometry of the enveloping body is not too complicated, but on the other hand uniform radiation of the solid body is achieved, the number of irradiation areas should not exceed an odd number between three and eleven.
  • the enveloping body according to the invention also offers the possibility of embedding, in addition to the arrangement of a solid body along the axis of the enveloping body, several solid bodies, for example three, which are then preferably arranged symmetrically around the axis of the enveloping body in order to achieve the symmetry mentioned.
  • cooling devices can be arranged on the outer surfaces of the reflection surfaces. It can be seen that, despite such cooling devices, a compact structure can be achieved. Furthermore, additional cooling measures can be taken in that the solid body is cooled directly in the enveloping body by, for example, channels or channels surrounding the solid body being provided in the enveloping body in order to pass a cooling fluid there.
  • the respective diode lasers are preferably arranged with the large axis of their elliptical beam cross section substantially perpendicular to the axis of the enveloping body, so that, in particular with regard to an enveloping body which is formed in the form of a short cylinder section, for example in the form of a disk-shaped one In part, the beam is directed towards these end faces of the enveloping body with a high beam divergence. As a result, a high packing density of the diode lasers used for pumping can be achieved.
  • FIG. 1 schematically shows an embodiment of a cylindrical envelope body according to the invention with a single solid rod which is embedded therein,
  • FIG. 2 shows a disk-shaped enveloping body with a cross-sectional shape corresponding to the enveloping body of FIG. 1,
  • FIG. 3 shows schematically the beam path within an enveloping body, as shown in FIGS. 1 and 2, specifically with regard to a diode laser field arrangement,
  • FIG. 4 shows the arrangement of FIG. 3, the beam path of the three diode laser field arrangements used being shown schematically,
  • Figure 5 schematically shows a diode laser with the exit surface emerging typical beam cone
  • FIGS. 6A to 6D schematically show different one- and two-dimensional diode laser field arrangements which can be used in connection with the enveloping body
  • FIG. 7 shows an arrangement comparable to the illustration in FIG. 4, but in contrast to the arrangement in FIG. 4, the irradiation areas are dimensioned smaller compared to the reflection areas in the circumferential direction of the envelope and the slow direction of the beam cross section of the diode laser parallel to the axis of the enveloping body or of the solid rod,
  • FIGS. 3 and 4 shows an arrangement corresponding to the arrangement of FIGS. 3 and 4, but with three solid-state rods embedded in the enveloping body, and
  • FIG. 9 shows an arrangement corresponding to FIG. 1, with a cooling channel being provided around the solid body in relation to FIG. 1.
  • FIG. 1 shows a perspective view schematically of a cylindrical enveloping body 1 which is delimited in the direction of the axis 2 by end faces 3 which run approximately perpendicular to the axis 2.
  • a continuous bore 4 runs along the axis 2 and is intended to receive a solid body rod of a diameter corresponding to the cross section of the bore 4.
  • the cylindrical surface 5 is divided into six surface segments 6, three flat surface segments 6 each forming irradiation areas 7, while the other three curved surface segments 6 form reflection surfaces 8. While the enveloping body 1 of FIG. 1 has the shape of an elongated cylinder, an enveloping body 1 is shown in FIG. 2, which has the same cross-sectional shape as the enveloping body 1 of FIG. 1, also with six surface segments, three segments of which are irradiation areas 7 and three Segments form reflection surfaces 8, but are disc-shaped, ie have only a small extension in the direction of the axis 2.
  • the enveloping bodies 1, as shown in FIGS. 1 and 2, are each shown in a plan view of their end face 3 in FIGS. 3 and 4.
  • the three irradiation areas 7 of the enveloping body 1 are each assigned a diode laser array or a diode laser field arrangement 10 (also referred to in the figures as "DL array").
  • the slow direction runs perpendicular to the axis 2 of the enveloping body 1
  • the radiation which is emitted by the respective diode laser field arrangements 10 is radiated into the enveloping body 1 via the irradiation regions 7.
  • the radiation 11 either strikes the solid-state rod 9 directly, as indicated in FIG. 3 by the central beam emanating from the lower diode laser array 10, or passes the solid-state rod 9, strikes the opposite reflection surface 8 and from there, due to the curvature of the reflection surface 8, it is focused on the solid body rod 9.
  • a corresponding radiation emanates from the two other diode laser field arrangements 10, as shown in FIG. 4, so that the solid-state rod 9 is irradiated uniformly from all sides of the arrangement.
  • the irradiation areas 7 are dimensioned such that their size corresponds in each case to the extent of the diode laser field arrangement 10, so that the entire irradiation area 7 is illuminated by the radiation from the diode laser field arrangement 10. Furthermore, as is clear from FIGS. 3 and 4, the arrangement is arranged symmetrically to a fictitious plane which contains the axis 2 of the enveloping body 1.
  • the reflecting surfaces 8 form a relatively large surface area, with respect to the entire enveloping body 1, which is suitable for dissipating heat loss generated in the enveloping body 1 to the outside environment.
  • a measure is therefore taken at the same time by these reflection surfaces to cool the enveloping body, which is very important for the laser properties of the solid-state laser that can be achieved, such as beam quality and output power.
  • the individual areas, i.e. The irradiation areas 7 and the reflection surfaces 8 can be dimensioned in a defined manner in their radial and axial extent. While the irradiation regions 7 are shown in the figures as flat surface parts, they can also have a curvature in order to either focus or expand the radiation emitted by the diode lasers of the field arrangement 10, the beam cross-section, the is typical for a diode laser, which is shown in FIG. 5 and will be explained below, is taken into account.
  • the two end faces 3 of the enveloping body 1 are preferably totally reflective, in order to reflect radiation 11, which emanates from the diode laser field arrangements 10 and strikes these end faces 3, back into the enveloping body 1. If necessary, these end faces 3 can be curved in order to achieve a focusing effect; flat end faces 3 are preferred, however, in order to achieve a simple geometry of the enveloping body 1, the radiation components which strike these end faces 3 within the enveloping body 1 being kept low by a defined arrangement of the diode lasers of the field arrangement 10 .
  • the enveloping body is preferably made of a highly heat-conducting and highly transmissive material, such as sapphire.
  • the elliptical beam cross section of a diode laser must be taken into account when orienting the diode laser field arrangement 10 relative to the irradiation regions 7 or the axis 2 of the enveloping body 1.
  • a typical structure of an individual diode laser 12 is shown schematically in FIG. 5, but without a heat sink and further supply devices.
  • the structure has a heavily doped p + phase 13, a p phase 14 and an n phase 15.
  • the reference numeral 20 denotes the exit surface of an emitting zone of the active medium, which has a certain extent in the direction of the plane of the transition the p-phase 14 and the n-phase 15, while it runs relatively narrow perpendicular to these planes.
  • the indicated typical radiation cone emerges from the exit surface 20 and has an elliptical cross section, the major axis 16 running perpendicular to the plane of the pn junction, while the minor axis 17 of the elliptical cross section runs parallel to the plane of the pn junction.
  • the large extent of the jet cone perpendicular to the plane of the pn junction which is also referred to as the "fast direction”
  • the jet cone in the direction of the minor axis 17 or perpendicular to the fast direction which is also referred to as the "slow direction”
  • the diode laser array arrangement 10 is preferably arranged such that the slow direction of the individual diode lasers 12 Field arrangement runs perpendicular to the axis 2 of the solid body rod 9 or the enveloping body 1. In this way, an extremely high pump power density can be achieved and an extremely compact pulse laser can thus be constructed.
  • diode laser field arrangements 10 Examples of the structure of diode laser field arrangements 10 which can be used in the embodiments of the enveloping body 1 are shown in FIGS. 6A to 6D. Since individual laser beam sources in the form of diode lasers can only be scaled to higher powers to a limited extent, a greater number of individual diode lasers are combined to form different arrays or field arrangements in order to achieve higher laser powers and power densities, as is shown in the figures.
  • FIGS. 6A and 6C A distinction can be made here between linear field arrangements, as shown in FIGS. 6A and 6C, double-linear field arrangements, as shown for example in FIG. 6B, and two-dimensional arrays in accordance with the schematic representation of FIG. 6D.
  • FIGS. 6A to 6D show, the dimensions and power densities of diode laser field arrangements 10 in the irradiation areas can be used accordingly in order to irradiate the radiation from the individual laser diodes into the enveloping body 1.
  • FIG. 7 shows an exemplary embodiment of a diode-laser-pumped solid-state laser with an enveloping body 1, in which the irradiation regions 7, in their radial extent around the axis 2 of the enveloping body 1, are dimensioned much smaller than those between the individual irradiation regions 7 lying reflection surfaces 8, viewed in the radial direction the reflection surfaces 8 being approximately five times larger than the irradiation regions 7.
  • three irradiation regions 7 are provided, each with an intermediate reflection surface 8.
  • the arrangement of Figure 7 is suitable for such structures of a diode laser-pumped solid-state laser, in which the Slow direction of the individual diode lasers of the diode laser field arrangement 10 runs parallel to the cylinder axis 2 of the solid-state rod 9.
  • the diode laser radiation is in turn radiated into the envelope body 1 via the three radiation regions 7, which are flat and are formed on the glass body by a highly transiting coating.
  • Part of the diode radiation is radiated directly onto the solid-state rod 9, as the radiation pattern shows, while the other part strikes the reflection surface 8 lying behind the field-body rod 9 in the beam direction, from where it emerges due to the concave curvature the reflection flat 8, in which the solid-state rod 9 is focused.
  • the effectiveness of the laser can be increased by the multiple reflection within the glass body.
  • FIG. 7 has the advantage over the embodiment of FIG. 3 that with a certain size of the enveloping body 1 more diode arrays 10 can be arranged around the circumference of the enveloping body 1.
  • the pump power density distribution in the solid can be set more easily. This concept is advantageous for continuously operated (cw) lasers.
  • the embodiment of FIG. 7 has the advantage that the large-scale dimensioning of the reflection surfaces 8, in comparison to the embodiment of FIGS. 3 and 4, enables a higher heat dissipation of heat loss within the envelope body 1 to be achieved.
  • FIG. 8 schematically shows a further embodiment, the shape of the enveloping body 1 and the arrangement of the diode laser field arrangements 10 corresponding to the embodiment of FIGS. 3 and 4, in which, however, three solid rods 9 are embedded in the enveloping body 1 compared to the earlier embodiment.
  • the individual solid bars are symmetrically evenly distributed around the axis 2 of the enveloping body 1, two solid bars 9 being aligned with their axes 22 such that the axes of the respective two solid bars 9 lie in one plane. gene, which runs parallel to the plane of the irradiation regions 7.
  • This embodiment has the advantage that the thermal load on the solid-state medium is reduced, and in addition the area which is opposed to the radiation of the diode laser field arrangements 10 is increased.
  • annular space 22 is left around the solid body rod 9, through which a fluid circulates, which dissipates the heat loss within the enveloping body 1.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

L'invention concerne un laser à solide pompé par diode laser qui comprend au moins un corps solide (9) sous forme de barre ou de disque, servant de substance active, et des diodes laser (10) dont le rayonnement (11) émis est focalisé dans le corps solide, des éléments (8) réfléchissants étant utilisés pour guider et/ou façonner le rayonnement. Ce laser à solide pompé par diode laser se caractérise en ce que le corps solide (9) est entouré dans le sens radial par rapport à son axe (2), par un corps enveloppant en verre ou en cristal (1) qui laisse passer le rayonnement émis. L'enveloppe extérieure du corps enveloppant (1) est divisée en au moins deux zones dont une constitue une zone de radiation incidente (7) pour le rayonnement émis et l'autre, une surface de réflexion (8) qui réfléchit sur le corps solide (9) le rayonnement (11) qui traverse le corps enveloppant (1).
PCT/EP1996/001251 1995-05-19 1996-03-22 Laser a solide pompe par diode laser Ceased WO1996037021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995118177 DE19518177A1 (de) 1995-05-19 1995-05-19 Diodenlasergepumpter Festkörperlaser
DE19518177.8 1995-05-19

Publications (1)

Publication Number Publication Date
WO1996037021A1 true WO1996037021A1 (fr) 1996-11-21

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Application Number Title Priority Date Filing Date
PCT/EP1996/001251 Ceased WO1996037021A1 (fr) 1995-05-19 1996-03-22 Laser a solide pompe par diode laser

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DE (1) DE19518177A1 (fr)
WO (1) WO1996037021A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2343990A (en) * 1998-11-18 2000-05-24 Jenoptik Jena Gmbh Solid state laser having a monolithic pumping cavity
JP2008300885A (ja) * 1998-11-12 2008-12-11 Mitsubishi Electric Corp 半導体レーザ光出力装置および固体レーザロッド励起モジュール
RU2497248C2 (ru) * 2008-09-17 2013-10-27 Таль Конструкция оптической накачки

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327256B4 (de) * 2003-01-27 2009-10-01 Delta Electronics, Inc. Strahlkombinierer
WO2008073085A2 (fr) * 2006-12-12 2008-06-19 D-Diode Llc Systèmes de diode de pompage thermiquement efficaces pouvant être mis à l'échelle
EP2802044A1 (fr) * 2013-05-10 2014-11-12 Proton Laser Applications, S.L. Système laser à l'état solide
EP2961012A1 (fr) * 2014-06-26 2015-12-30 Light Speed Marker, S.L. Système laser permettant de modifier des objets
US11025031B2 (en) 2016-11-29 2021-06-01 Leonardo Electronics Us Inc. Dual junction fiber-coupled laser diode and related methods
WO2020036998A1 (fr) 2018-08-13 2020-02-20 Lasertel, Inc. Utilisation d'une carte de circuit imprimé à noyau métallique (pcb) pour la génération d'une commande à impulsion à courant élevé ultra-étroite
DE102019121924A1 (de) 2018-08-14 2020-02-20 Lasertel, Inc. Laserbaugruppe und zugehörige verfahren
US11296481B2 (en) 2019-01-09 2022-04-05 Leonardo Electronics Us Inc. Divergence reshaping array
US11752571B1 (en) 2019-06-07 2023-09-12 Leonardo Electronics Us Inc. Coherent beam coupler
EP3792683A1 (fr) 2019-09-16 2021-03-17 Leonardo Electronics US Inc. Homogénéisateur hexagonal à intensité d'entrée asymétrique

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US4756002A (en) * 1986-06-23 1988-07-05 Mcdonnell Douglas Corporation Laser diode coupler
US4924474A (en) * 1988-02-10 1990-05-08 Mitsubishi Denki Kabushiki Kaisha Laser device with high oscillation efficiency
US5033058A (en) * 1989-01-04 1991-07-16 Laserdot Rod laser with optical pumping from a source having a narrow emitting area
FR2670623A1 (fr) * 1990-12-18 1992-06-19 Europ Agence Spatiale Laser a barreau actif hexagonal.
JPH05335663A (ja) * 1992-06-04 1993-12-17 Nec Corp レーザダイオード励起固体レーザ装置
US5307365A (en) * 1991-08-08 1994-04-26 Northrop Corporation Cavity pumped, solid state lasers
US5349600A (en) * 1992-09-21 1994-09-20 Kokusai Denshin Denwa Kabushiki Kaisha Solid state laser

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756002A (en) * 1986-06-23 1988-07-05 Mcdonnell Douglas Corporation Laser diode coupler
US4924474A (en) * 1988-02-10 1990-05-08 Mitsubishi Denki Kabushiki Kaisha Laser device with high oscillation efficiency
US5033058A (en) * 1989-01-04 1991-07-16 Laserdot Rod laser with optical pumping from a source having a narrow emitting area
FR2670623A1 (fr) * 1990-12-18 1992-06-19 Europ Agence Spatiale Laser a barreau actif hexagonal.
US5307365A (en) * 1991-08-08 1994-04-26 Northrop Corporation Cavity pumped, solid state lasers
JPH05335663A (ja) * 1992-06-04 1993-12-17 Nec Corp レーザダイオード励起固体レーザ装置
US5349600A (en) * 1992-09-21 1994-09-20 Kokusai Denshin Denwa Kabushiki Kaisha Solid state laser

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 18, no. 161 (E - 1526) 17 March 1994 (1994-03-17) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008300885A (ja) * 1998-11-12 2008-12-11 Mitsubishi Electric Corp 半導体レーザ光出力装置および固体レーザロッド励起モジュール
GB2343990A (en) * 1998-11-18 2000-05-24 Jenoptik Jena Gmbh Solid state laser having a monolithic pumping cavity
RU2497248C2 (ru) * 2008-09-17 2013-10-27 Таль Конструкция оптической накачки

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