GB8917564D0 - Laser - Google Patents

Laser

Info

Publication number: GB8917564D0
Authority: GB; United Kingdom
Prior art keywords: laser
Prior art date: 1989-08-01
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

GB898917564A

Other versions

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.)

British Telecommunications PLC

Original Assignee

British Telecommunications PLC

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.)

1989-08-01

Filing date

1989-08-01

Publication date

1989-09-13

1989-08-01 Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC

1989-08-01 Priority to GB8917564A priority Critical patent/GB2234632A/en

1989-09-13 Publication of GB8917564D0 publication Critical patent/GB8917564D0/en

1991-02-06 Publication of GB2234632A publication Critical patent/GB2234632A/en

Status Withdrawn legal-status Critical Current

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
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04256—Electrodes, e.g. characterised by the structure characterised by the configuration
- 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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
- H01S5/06255—Controlling the frequency of the radiation
- H01S5/06258—Controlling the frequency of the radiation with DFB-structure
- 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
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04254—Electrodes, e.g. characterised by the structure characterised by the shape
- 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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section 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
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure

Landscapes

Physics & Mathematics (AREA)
Condensed Matter Physics & Semiconductors (AREA)
General Physics & Mathematics (AREA)
Electromagnetism (AREA)
Optics & Photonics (AREA)
Semiconductor Lasers (AREA)

GB8917564A 1989-08-01 1989-08-01 Distributed feedback laser Withdrawn GB2234632A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB8917564A GB2234632A (en)	1989-08-01	1989-08-01	Distributed feedback laser

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8917564A GB2234632A (en)	1989-08-01	1989-08-01	Distributed feedback laser

Publications (2)

Publication Number	Publication Date
GB8917564D0 true GB8917564D0 (en)	1989-09-13
GB2234632A GB2234632A (en)	1991-02-06

Family

ID=10660978

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8917564A Withdrawn GB2234632A (en)	1989-08-01	1989-08-01	Distributed feedback laser

Country Status (1)

Country	Link
GB (1)	GB2234632A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2804838B2 (en) *	1990-10-11	1998-09-30	国際電信電話株式会社	Tunable semiconductor laser
CN110261954B (en) *	2019-06-28	2020-08-28	江苏大学	Long-period fiber grating filter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0205139B1 (en) *	1985-06-10	1992-09-23	Nec Corporation	Distributed feedback semiconductor laser device
GB2197531B (en) *	1986-11-08	1991-02-06	Stc Plc	Distributed feedback laser

1989
- 1989-08-01 GB GB8917564A patent/GB2234632A/en not_active Withdrawn

Also Published As

Publication number	Publication date
GB2234632A (en)	1991-02-06

Publication	Publication Date	Title
GB8912765D0 (en)	1989-07-19	A laser
EP0423431A3 (en)	1991-08-28	Surgical laser
EP0427229A3 (en)	1992-04-15	Laser
EP0431792A3 (en)	1991-09-18	Laser interferometer
EP0436193A3 (en)	1991-10-02	Folded-path waveguide laser
EP0429652A4 (en)	1991-10-23	High-frequency discharge-excited laser
GB2236426B (en)	1994-01-26	Laser source
GB8811820D0 (en)	1988-06-22	Laser
EP0431619A3 (en)	1991-10-09	Laser device
GB8908304D0 (en)	1989-05-24	Ring laser
GB2235817B (en)	1993-10-27	Lasers
AU107171S (en)	1990-03-30	Laser printer
EP0427856A4 (en)	1991-10-30	Solid laser
GB2233814B (en)	1994-06-22	Laser apparatus
GB2215511B (en)	1992-08-12	Lasers
EP0426102A3 (en)	1992-04-22	Laser device
GB9010982D0 (en)	1990-07-04	Pulsed laser
GB2276031B (en)	1994-12-21	Solid laser device
EP0416122A4 (en)	1991-04-03	Nc laser
HU900965D0 (en)	1990-05-28	Alga-destroying produces
GB2239984B (en)	1994-10-05	Solid laser device
GB8917564D0 (en)	1989-09-13	Laser
GB2215911B (en)	1992-04-01	Laser devices
GB9013535D0 (en)	1990-08-08	Laser
GB8812648D0 (en)	1988-06-29	Lasers

Legal Events

Date	Code	Title	Description
1991-12-04	WAP	Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)