CN1071789A - Laser Frequency Stabilization Method and Device - Google Patents
Laser Frequency Stabilization Method and Device Download PDFInfo
- Publication number
- CN1071789A CN1071789A CN 91109531 CN91109531A CN1071789A CN 1071789 A CN1071789 A CN 1071789A CN 91109531 CN91109531 CN 91109531 CN 91109531 A CN91109531 A CN 91109531A CN 1071789 A CN1071789 A CN 1071789A
- Authority
- CN
- China
- Prior art keywords
- laser
- frequency
- differential amplifier
- signal
- power supply
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000006641 stabilisation Effects 0.000 title claims description 14
- 238000011105 stabilization Methods 0.000 title claims description 14
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Images
Landscapes
- Lasers (AREA)
Abstract
The present invention relates to an improvement on laser frequency stabilizing method and its equipment in laser technology. Two oscillation modes are excited in laser, and the corresponding frequency is v1V and v2Make the two modes relative to the central frequency v of the gain curve0Asymmetry, converting laser radiation into an electrical signal, separating a direct current component and an alternating current component from the electrical signal, and comparing the two components to control the length change of the laser resonant cavity. The invention reduces the number of units in the loop, greatly improves the stability, and ensures that the frequency instability can reach 10 in a long time (several hours)-11Up to 10 in a short time (seconds or minutes)-14. The invention can also be used in multi-frequency lasers.
Description
The invention relates to the improvement of laser frequency stabiliz ation method in the laser technology and device thereof.
The method of known stabilized lasers frequency all is to adopt the chamber length of control laser to known laser bimodulus of realize. (double frequency) frequency-stabilizing method is usage-Bai interferometer or Polarization Method; The laser of different mode is separated in the space; Compare then its intensity; Changing Strength Changes into the signal of telecommunication, to control the chamber of laser instrument long; With the purpose that reaches laser frequency stabilization (" see Э. Г. С а п р ы к и н и д р. С т а б и л и з а ц и я ч а с т о т ы д в у х м о д о в о г о л а э e р а. Ж П С; 1970; т .13; в .6; с .1072 " and " А. Н. Б о н д а р e н к о и д р. С т а б и л и э и р о в а н н ы й д в у-х ч а с т о т н ы й He+Ne л а э e р н а д л и н у в о л н ы 0; 63 м к м; П Т Э; № 4; 1978, с .225 "). Known another kind of laser frequency stabiliz ation method is in laser exit place usage-Bai interferometer scan laser output, the optical receiver output signal of telecommunication by interferometer, the signal of telecommunication is carried out spectrum analysis, change with the chamber of this control laser is long, with the stability that improves laser frequency (see А. Н. Б о н д а р e н к о, Ю. М. К р и н и ц ы н. С т а б и л и з а ц и я ч а с т о т ы Н e-И e л а э e р а н а λ=0,63 м к м в р e ж и м e к о н к у р e н ц и и т и п о в к о л e б а н и й, ж. А в т о м e т р и я, № 3,1978, c.115) .The method complexity, loaded down with trivial details particularly because the unit of loop is many, is easily brought extra error to frequency stabilization system.Therefore, be difficult to guarantee the higher stable degree.
The objective of the invention is the known laser frequency-stabilizing method is improved, propose a kind of simple and easy method that improves the laser frequency stability of two film lasers, and design simple, reliable, stable laser frequency stabilization device with the method.
The basic design of the inventive method is to excite two oscillating membranes in laser, and corresponding frequencies is v
1And v
2, make the centre frequency v of this two film with respect to gain curve
0Symmetry (as shown in Figure 1a) changes laser emission into the signal of telecommunication, and the direct current and the alternating current component of the signal of telecommunication are separated, and obtains this two-component ratio (shown in Fig. 1 b).Because the ratio of these two components of the signal of telecommunication depends on v
1And v
2With respect to v
0The position, its ratio changes the information that is comprising the laserresonator length variations, so the variation by this ratio just can be controlled the length of laserresonator, it is stablized, and reaches the purpose of stabilized lasers frequency.
Device of the present invention is to be made of two-frequency laser, controlled mirror, piezoelectric ceramic and pellicle mirror etc., one ratio control circuit is set in its loop, insert the DC component and the alternating current component comparison of opto-electronic conversion, shunting, the signal of telecommunication and be changed to feedback signal and control the long circuit that changes of laser chamber, to keep being asymmetric with gain curve centre frequency v with ratio
0Two corresponding be v again and again
1And v
2Oscillation mode stable.
The present invention has eliminated the extra error that some components and parts bring owing to reduced in the loop or the number of unit in the device, so improved stability greatly, makes its frequency instability can reach 10 at long-time (several hrs)
-11, at short notice (several seconds or a few minutes) can reach 10
-14The present invention removes the laser frequency stabilization that is applied to the dual-mode laser device, also can be used in the laser of multifrequency.
One of embodiments of the invention are put device 7, rectifier 8 and high impedance 9 and are constituted by two-frequency laser 1, controlled mirror 2, piezoelectric ceramic 3, differential amplifier 4, pellicle mirror 5, photelectric receiver 6, high frequency choosing as shown in Figure 2.The output of photelectric receiver 6, the high impedance 9 of leading up to is connected to an input of differential amplifier 4, another input that device 7 and rectifier 8 are received differential amplifier 4 is put by high frequency choosing in another road, become closed loop with two-frequency laser, relatively the amplitude of dc signal changes the length variations of controlling laserresonator with its ratio.
Embodiments of the invention two as shown in Figure 3, constitute by two-frequency laser 1, controlled mirror 2, piezoelectric ceramic 3, differential amplifier 4, pellicle mirror 5, photelectric receiver 6, electric capacity 10, wave detector 11 and DC power supply 12.The output of photelectric receiver 6 is received on the wave detector 11 by electric capacity 10, and an input of differential amplifier 4 is received in the output of wave detector 11, and becomes closed loop with two-frequency laser.On the DC power supply 12 that another input termination voltage of differential amplifier 4 is adjustable, control the length variations of laserresonator by the quotient of amplitudes that compares dc signal and ac signal.
Accompanying drawing 1 of the present invention is the principle rendering, and accompanying drawing 2 and accompanying drawing 3 are two embodiment of the present invention, and wherein 1 is two-frequency laser, 2 is controlled mirror, and 3 is piezoelectric ceramic, and 4 is differential amplifier, 5 is pellicle mirror, 6 is photelectric receiver, and 7 put device for high frequency choosing, and 8 is rectifier, 9 is high impedance, 10 is electric capacity, and 11 is wave detector, and 12 is DC power supply.
Claims (5)
1, laser frequency stabiliz ation method, it is characterized in that exciting in the laser two corresponding frequencies is v
1And v
2Oscillation mode, make the centre frequency v of this two mould with respect to gain curve
oAsymmetric, laser emission is changed into the signal of telecommunication, and separately with the direct current in the signal of telecommunication and alternating current component, by its amplitude relatively, thereby reach frequency stabilization with the length that laserresonator is controlled in the variation of its ratio.
2, according to the frequency regulator of claim 1 laser frequency stabiliz ation method, be to constitute by two-frequency laser, controlled mirror, piezoelectric ceramic, pellicle mirror etc., it is characterized in that being provided with in the loop ratio control circuit, insert the DC component and the alternating current component comparison of opto-electronic conversion, shunting, the signal of telecommunication and be changed to feedback signal and control the long circuit that changes of laser chamber, to keep being asymmetric with gain curve centre frequency v with ratio
0Two corresponding frequencies be v
1And v
2Oscillation mode stable.
3, laser frequency stabilization device according to claim 2 is characterized in that the ratio control circuit puts device, rectifier and high impedance by differential amplifier, photelectric receiver, high frequency choosing and form.The output of photelectric receiver, the high impedance of leading up to are connected to an input of differential amplifier, and another input that device and rectifier are received differential amplifier is put by high frequency choosing in another road, becomes closed loop with two-frequency laser.
4, laser frequency stabilization device according to claim 2, it is characterized in that the ratio control circuit is made up of differential amplifier, photelectric receiver, electric capacity, wave detector and DC power supply, the output of photelectric receiver is received on the wave detector by electric capacity, an input of differential amplifier is received in the output of wave detector, and constitute closed loop with two-frequency laser, on another input termination DC power supply of differential amplifier.
5, laser frequency stabilization device according to claim 4 is characterized in that DC power supply is the adjustable DC power supply of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109531 CN1071789A (en) | 1991-10-15 | 1991-10-15 | Laser Frequency Stabilization Method and Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109531 CN1071789A (en) | 1991-10-15 | 1991-10-15 | Laser Frequency Stabilization Method and Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1071789A true CN1071789A (en) | 1993-05-05 |
Family
ID=4909890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91109531 Pending CN1071789A (en) | 1991-10-15 | 1991-10-15 | Laser Frequency Stabilization Method and Device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071789A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050084C (en) * | 1993-09-29 | 2000-03-08 | 松下电工株式会社 | Resin forming coating method of resin formed products, coating apparatus and result product |
| CN102005693A (en) * | 2010-10-11 | 2011-04-06 | 清华大学 | Laser frequency stabilizing method and device for precision metrology |
| CN103532002A (en) * | 2013-10-22 | 2014-01-22 | 华北电力大学（保定） | Rapid frequency stabilization method of solid or gas laser device |
-
1991
- 1991-10-15 CN CN 91109531 patent/CN1071789A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050084C (en) * | 1993-09-29 | 2000-03-08 | 松下电工株式会社 | Resin forming coating method of resin formed products, coating apparatus and result product |
| CN102005693A (en) * | 2010-10-11 | 2011-04-06 | 清华大学 | Laser frequency stabilizing method and device for precision metrology |
| CN103532002A (en) * | 2013-10-22 | 2014-01-22 | 华北电力大学（保定） | Rapid frequency stabilization method of solid or gas laser device |
| CN103532002B (en) * | 2013-10-22 | 2015-11-25 | 华北电力大学（保定） | A kind of solid or gas laser rapid frequency stabilization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6839363B2 (en) | Digital control of actively mode-locked lasers | |
| EP0404857B1 (en) | Laser frequency control | |
| EP0560179A1 (en) | Laser light beam generating apparatus | |
| GB1272727A (en) | Travelling-wave regenerative laser amplifier | |
| US3646468A (en) | Servo aided injection phase-locked laser oscillator | |
| JPH0626279B2 (en) | Cher Laser Stabilization System | |
| WO1989001695A1 (en) | An electrically self-oscillating, rf-excited gas laser | |
| CN106340798A (en) | Continuous tunable single-frequency ti sapphire laser based on locking of electro-optical etalon of internal cavity | |
| US3395365A (en) | Frequency stabilized optical maser | |
| Busse et al. | Application of the opto-acoustic effect to the operation of optically pumped far-infrared gas lasers | |
| US3831108A (en) | Method of frequency and intensity stabilization of the radiation emitted by a high-power gas laser and a gas laser for the application of said method | |
| US4964132A (en) | Laser arrangement with frequency stabilized and intensity stabilized laser emission | |
| US4694458A (en) | Device for frequency stabilizing an RF excitation laser | |
| CN1071789A (en) | Laser Frequency Stabilization Method and Device | |
| US4606031A (en) | Device for frequency modulation of a laser output spectrum | |
| Svelto et al. | Characterization of Yb–Er: glass lasers at 1.5 μm wavelength in terms of amplitude and frequency stability | |
| US6084893A (en) | Apparatus and method of laser power and frequency stabilization of radio frequency excited laser using optogalvanic effect | |
| EP0592014A1 (en) | RF discharge excitation laser apparatus | |
| CN2109002U (en) | Laser frequency stabilizer | |
| US3622908A (en) | Dithered gain characteristic stabilization of a gas laser | |
| JPS62230073A (en) | Variable wavelength light source | |
| RU2064721C1 (en) | Frequency-stabilized gas laser | |
| JPH11121845A (en) | Mode-locked laser light source | |
| US6574252B1 (en) | Radio frequency excited slab waveguide laser comprising detector and method of stabilizing the laser power and frequency using optogalvanic effect | |
| CN116826499B (en) | High-power single-frequency pulse laser based on injection locking technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |