DE69404135T2 - Laser - Google Patents

Laser

Info

Publication number
DE69404135T2
DE69404135T2 DE69404135T DE69404135T DE69404135T2 DE 69404135 T2 DE69404135 T2 DE 69404135T2 DE 69404135 T DE69404135 T DE 69404135T DE 69404135 T DE69404135 T DE 69404135T DE 69404135 T2 DE69404135 T2 DE 69404135T2
Authority
DE
Germany
Prior art keywords
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.)
Expired - Fee Related
Application number
DE69404135T
Other languages
English (en)
Other versions
DE69404135D1 (en
Inventor
Stewart Whittley
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.)
Leonardo UK Ltd
Original Assignee
GEC-MARCONI AVIONICS (HOLDINGS) Ltd STANMORE MIDDLESSEX GB
GEC Marconi Avionics Holdings Ltd
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 GEC-MARCONI AVIONICS (HOLDINGS) Ltd STANMORE MIDDLESSEX GB, GEC Marconi Avionics Holdings Ltd filed Critical GEC-MARCONI AVIONICS (HOLDINGS) Ltd STANMORE MIDDLESSEX GB
Application granted granted Critical
Publication of DE69404135D1 publication Critical patent/DE69404135D1/de
Publication of DE69404135T2 publication Critical patent/DE69404135T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1123—Q-switching
    • H01S3/115—Q-switching using intracavity electro-optic devices
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • 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
    • H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
    • 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08018—Mode suppression
    • H01S3/08022—Longitudinal modes
    • H01S3/08031—Single-mode emission
    • 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08018—Mode suppression
    • H01S3/0804—Transverse or lateral modes
    • H01S3/08045—Single-mode emission
    • 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
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • H01S3/1396—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length by using two modes present, e.g. Zeeman splitting
DE69404135T 1993-03-20 1994-03-18 Laser Expired - Fee Related DE69404135T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9305854A GB2276973A (en) 1993-03-20 1993-03-20 A pulsed laser
PCT/GB1994/000554 WO1994022189A1 (en) 1993-03-20 1994-03-18 A laser

Publications (2)

Publication Number Publication Date
DE69404135D1 DE69404135D1 (en) 1997-08-14
DE69404135T2 true DE69404135T2 (de) 1997-10-30

Family

ID=10732482

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69404135T Expired - Fee Related DE69404135T2 (de) 1993-03-20 1994-03-18 Laser

Country Status (5)

Country Link
US (1) US5646952A (de)
EP (1) EP0689725B1 (de)
DE (1) DE69404135T2 (de)
GB (1) GB2276973A (de)
WO (1) WO1994022189A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5905746A (en) * 1997-08-01 1999-05-18 Litton Systems, Inc. Q-switch laser method and apparatus
US6324191B1 (en) * 2000-01-12 2001-11-27 Intralase Corp. Oscillator with mode control
US7180918B2 (en) * 2003-05-16 2007-02-20 Metal Improvement Company, Llc Self-seeded single-frequency solid-state ring laser and system using same
JP4584680B2 (ja) * 2004-11-05 2010-11-24 タカタ株式会社 シートベルトリトラクタ、シートベルト装置、シートベルト装置付車両
FR2936109B1 (fr) * 2008-09-17 2010-10-08 Thales Sa Structure de pompage optique.
US10925515B2 (en) 2014-05-22 2021-02-23 Picomole Inc. Alveolar breath collection apparatus
CA2998026A1 (en) * 2017-03-13 2018-09-13 Picomole Inc. Apparatus and method of optimizing laser system
US11035789B2 (en) 2019-04-03 2021-06-15 Picomole Inc. Cavity ring-down spectroscopy system and method of modulating a light beam therein
US11957450B2 (en) 2020-02-28 2024-04-16 Picomole Inc. Apparatus and method for collecting a breath sample using an air circulation system
US11782049B2 (en) 2020-02-28 2023-10-10 Picomole Inc. Apparatus and method for collecting a breath sample using a container with controllable volume

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197513A (en) * 1977-12-09 1980-04-08 Quanta Ray Inc. Active Q-switched high power single mode laser
EP0108562A1 (de) * 1982-11-05 1984-05-16 British Telecommunications Verfahren und Vorrichtung zum Steuern von Lasern
EP0109254A2 (de) * 1982-11-13 1984-05-23 Yuk Wah Joseph Koo Einzelmode-Impulslaser
JPS62119991A (ja) * 1985-11-19 1987-06-01 Nec Corp 単一軸モ−ドレ−ザ装置
US5185751A (en) * 1991-05-10 1993-02-09 Amoco Corporation Automated single longitudinal mode locking system
US5412676A (en) * 1994-06-06 1995-05-02 National Research Council Of Canada Method and apparatus for the determination of the relative frequency offset between an input optical signal and a resonance frequency of an optical cavity

Also Published As

Publication number Publication date
WO1994022189A1 (en) 1994-09-29
US5646952A (en) 1997-07-08
DE69404135D1 (en) 1997-08-14
EP0689725B1 (de) 1997-07-09
GB9305854D0 (en) 1993-08-04
EP0689725A1 (de) 1996-01-03
GB2276973A (en) 1994-10-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BAE SYSTEMS AVIONICS LTD., FARNBOROUGH, HAMPSHIRE,

8327 Change in the person/name/address of the patent owner

Owner name: SELEX SENSORS AND AIRBORNE SYSTEMS LTD., BASILDON,

8339 Ceased/non-payment of the annual fee