DE69523485T2 - Wellenlängenabstimmbare monomodige Laserquelle mit selbstausrichtendem externen Resonator - Google Patents

Wellenlängenabstimmbare monomodige Laserquelle mit selbstausrichtendem externen Resonator

Info

Publication number
DE69523485T2
DE69523485T2 DE69523485T DE69523485T DE69523485T2 DE 69523485 T2 DE69523485 T2 DE 69523485T2 DE 69523485 T DE69523485 T DE 69523485T DE 69523485 T DE69523485 T DE 69523485T DE 69523485 T2 DE69523485 T2 DE 69523485T2
Authority
DE
Germany
Prior art keywords
wavelength
self
laser source
mode laser
external resonator
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 - Lifetime
Application number
DE69523485T
Other languages
English (en)
Other versions
DE69523485D1 (de
Inventor
Herve Lefevre
Philippe Martin
Bernard Laloux
Philippe Graindorge
Laurent Disdier
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.)
YENISTA OPTICS S.A., LANNION, FR
Original Assignee
Photonetics SA
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 Photonetics SA filed Critical Photonetics SA
Publication of DE69523485D1 publication Critical patent/DE69523485D1/de
Application granted granted Critical
Publication of DE69523485T2 publication Critical patent/DE69523485T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/14—External cavity lasers
    • H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
    • H01S5/143—Littman-Metcalf configuration, e.g. laser - grating - mirror
    • 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
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/0811—Construction or shape of optical resonators or components thereof comprising three or more reflectors incorporating a dispersive element, e.g. a prism for wavelength selection
    • H01S3/0812—Construction or shape of optical resonators or components thereof comprising three or more reflectors incorporating a dispersive element, e.g. a prism for wavelength selection using a diffraction grating
    • 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
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • H01S3/1055—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length one of the reflectors being constituted by a diffraction grating
    • 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
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/023—Mount members, e.g. sub-mount members
    • H01S5/02325—Mechanically integrated components on mount members or optical micro-benches
DE69523485T 1994-09-13 1995-09-13 Wellenlängenabstimmbare monomodige Laserquelle mit selbstausrichtendem externen Resonator Expired - Lifetime DE69523485T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9410925A FR2724496B1 (fr) 1994-09-13 1994-09-13 Source laser monomode accordable en longueur d'onde a cavite externe autoalignee

Publications (2)

Publication Number Publication Date
DE69523485D1 DE69523485D1 (de) 2001-11-29
DE69523485T2 true DE69523485T2 (de) 2002-05-08

Family

ID=9466903

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69523485T Expired - Lifetime DE69523485T2 (de) 1994-09-13 1995-09-13 Wellenlängenabstimmbare monomodige Laserquelle mit selbstausrichtendem externen Resonator
DE69510420T Expired - Lifetime DE69510420T2 (de) 1994-09-13 1995-09-13 Wellenlängenabstimmbare Monomodlaserquelle mit selbstausrichtendem externen Resonator

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69510420T Expired - Lifetime DE69510420T2 (de) 1994-09-13 1995-09-13 Wellenlängenabstimmbare Monomodlaserquelle mit selbstausrichtendem externen Resonator

Country Status (4)

Country Link
US (2) US5594744A (de)
EP (2) EP0917261B1 (de)
DE (2) DE69523485T2 (de)
FR (1) FR2724496B1 (de)

Families Citing this family (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724496B1 (fr) * 1994-09-13 1996-12-20 Photonetics Source laser monomode accordable en longueur d'onde a cavite externe autoalignee
DE19515321A1 (de) * 1995-04-20 1996-10-24 Gos Ges Zur Foerderung Angewan Durchstimmbare, justierstabile Laserlichtquelle mit spektral gefiltertem Ausgang
EP0801451B1 (de) * 1996-04-10 2003-03-05 Joachim Sacher Abstimmvorrichtung
US5867512A (en) * 1997-02-10 1999-02-02 Sacher; Joachim Tuning arrangement for a semiconductor diode laser with an external resonator
US6100975A (en) * 1996-05-13 2000-08-08 Process Instruments, Inc. Raman spectroscopy apparatus and method using external cavity laser for continuous chemical analysis of sample streams
FR2754054B1 (fr) * 1996-10-02 1998-12-18 Photonetics Analyseur de spectre optique et procede d'analyse de spectre correspondant
US5995521A (en) * 1997-05-16 1999-11-30 New Focus, Inc. External cavity laser pivot design
JPH10341057A (ja) * 1997-06-06 1998-12-22 Ando Electric Co Ltd 外部共振器型波長可変半導体レーザー光源およびその波長可変方法
JPH11163450A (ja) * 1997-11-28 1999-06-18 Ando Electric Co Ltd 波長可変光源
EP0921614B1 (de) 1997-12-09 2001-03-14 Hewlett-Packard Company Laserquelle mit grossem Leistungsbereich und mit niedrigem Rauschpegel
FR2775390B1 (fr) * 1998-02-20 2000-05-05 Photonetics Source laser monomode continument accordable en longueur d'onde
JPH11307864A (ja) * 1998-04-23 1999-11-05 Ando Electric Co Ltd 外部共振器型波長可変光源
CA2238544A1 (en) 1998-05-05 1999-11-05 Jds Fitel Inc. Custom optical filters
US6081543A (en) * 1998-05-14 2000-06-27 The Regents Of The University Of Michigan Stretcher-compressor assembly having a single grating
DE19832750C2 (de) * 1998-07-21 2000-06-08 Lpkf Laser & Electronics Gmbh Justierbares System eines Diodenlasers mit externem Resonator in der Littmann-Konfiguration
FR2781613B1 (fr) 1998-07-27 2000-10-06 Photonetics Laser en espace libre avec sortie fibre autoalignee
US6118534A (en) * 1998-07-30 2000-09-12 B. F. Goodrich Company Sensor and method for measuring changes in environmental conditions
WO2000016453A1 (en) 1998-09-11 2000-03-23 New Focus, Inc. Tunable laser
FR2786937B1 (fr) * 1998-12-04 2001-02-16 Photonetics Source multi-longueur d'onde
FR2789812B1 (fr) * 1999-02-15 2001-04-27 Photonetics Reflecteur optique et source laser a cavite externe incorporant un tel reflecteur
FR2789767B1 (fr) * 1999-02-15 2001-04-27 Photonetics Systeme optique retroreflechissant auto-aligne de filtrage en longueur d'onde, monochromateur et laser incorporant un tel systeme
EP1159775B1 (de) * 1999-02-19 2004-09-01 Radians Innova AB Vorrichtung und verfahren zum durchstimmen der wellenlänge in einem laser mit externem resonator
FR2795878B1 (fr) * 1999-06-30 2001-09-28 Photonetics Source laser avec filtrage integre de l'emission spontanee amplifiee
FR2795877B1 (fr) * 1999-06-30 2001-10-05 Photonetics Composant optique partiellement reflechissant et source laser incorporant un tel composant
FR2796469B1 (fr) * 1999-07-12 2003-06-27 Photonetics Filtre optique a reponse rectangulaire permettant le decoupage d'un intervalle spectral limite
US6879619B1 (en) 1999-07-27 2005-04-12 Intel Corporation Method and apparatus for filtering an optical beam
US6853654B2 (en) * 1999-07-27 2005-02-08 Intel Corporation Tunable external cavity laser
DE19942276A1 (de) * 1999-09-04 2001-03-15 Wandel & Goltermann Prisma für optischen Spektrumanalysator
US6856632B1 (en) * 1999-09-20 2005-02-15 Iolon, Inc. Widely tunable laser
US6847661B2 (en) 1999-09-20 2005-01-25 Iolon, Inc. Tunable laser with microactuator
US6868099B1 (en) 1999-11-04 2005-03-15 Wisconsin Alumni Research Foundation Frequency-narrowed high power diode laser system with external cavity
JP2001156393A (ja) 1999-11-29 2001-06-08 Ando Electric Co Ltd Ｖ溝格子ミラー及びこれを用いた外部共振器型波長可変光源
DE19961908C2 (de) * 1999-12-20 2002-03-28 Ges Zur Foerderung Angewandter Optik Optoelektronik Quantenelektronik & Spektroskopie Ev Hochauflösendes Littrow-Spektrometer und Verfahren zur quasi-simultanen Bestimmung einer Wellenlänge und eines Linienprofils
US6636306B2 (en) 2000-01-07 2003-10-21 Exfo Electro-Optical Engineering Inc. Optical spectrum analyzer
US6625183B1 (en) 2000-01-31 2003-09-23 New Focus, Inc. External cavity laser apparatus
US6597449B1 (en) 2000-01-31 2003-07-22 New Focus, Inc. Real time process control of optical components using linearly swept tunable laser
AU2001271243A1 (en) 2000-03-23 2001-10-03 New Focus, Inc. Continuously grating-tuned external cavity laser
US7209498B1 (en) 2000-05-04 2007-04-24 Intel Corporation Method and apparatus for tuning a laser
US7120176B2 (en) * 2000-07-27 2006-10-10 Intel Corporation Wavelength reference apparatus and method
DK200001321A (da) * 2000-09-05 2002-03-06 Esko Graphics As Lasersystem med ekstern optisk tilbagekobling og anvendelse af et sådant system indenfor den grafiske industri
FR2815182B1 (fr) * 2000-10-10 2003-02-28 Photonetics Source laser monomode continument accordable en longueur d'onde
US6584133B1 (en) 2000-11-03 2003-06-24 Wisconsin Alumni Research Foundation Frequency-narrowed high power diode laser array method and system
US6697192B1 (en) 2000-11-08 2004-02-24 Massachusetts Institute Of Technology High power, spectrally combined laser systems and related methods
JP2002190642A (ja) * 2000-12-21 2002-07-05 Ando Electric Co Ltd 波長可変光源
GB0101985D0 (en) * 2001-01-25 2001-03-14 Marconi Comm Ltd Optical component
US6658031B2 (en) 2001-07-06 2003-12-02 Intel Corporation Laser apparatus with active thermal tuning of external cavity
US6791747B2 (en) * 2001-04-25 2004-09-14 Massachusetts Institute Of Technology Multichannel laser transmitter suitable for wavelength-division multiplexing applications
US6710914B2 (en) 2001-05-22 2004-03-23 Lightwave Electronics Tunable light source employing optical parametric oscillation near degeneracy
WO2002099368A1 (en) * 2001-06-01 2002-12-12 Cidra Corporation Optical channel monitor
US7253897B2 (en) 2001-06-01 2007-08-07 Cidra Corporation Optical spectrum analyzer
US6724797B2 (en) 2001-07-06 2004-04-20 Intel Corporation External cavity laser with selective thermal control
US6901088B2 (en) * 2001-07-06 2005-05-31 Intel Corporation External cavity laser apparatus with orthogonal tuning of laser wavelength and cavity optical pathlength
US6804278B2 (en) 2001-07-06 2004-10-12 Intel Corporation Evaluation and adjustment of laser losses according to voltage across gain medium
US6822979B2 (en) 2001-07-06 2004-11-23 Intel Corporation External cavity laser with continuous tuning of grid generator
JP2003114402A (ja) 2001-10-02 2003-04-18 Sumitomo Electric Ind Ltd 光合分波器およびその調整方法
EP1459111B1 (de) * 2001-12-14 2007-06-06 Agilent Technologies, Inc. Externer resonator mit retro-reflektierender vorrichtung insbesondere für abstimmbare laser
DE60228495D1 (en) * 2002-02-22 2008-10-02 Agilent Technologies Inc Multiple laser resonator
US7230959B2 (en) 2002-02-22 2007-06-12 Intel Corporation Tunable laser with magnetically coupled filter
US7317739B2 (en) * 2002-03-15 2008-01-08 Princeton University Mode-locked laser using a mode-locking wavelength selective reflector
US6983090B2 (en) 2002-03-21 2006-01-03 Jds Uniphase Inc. High resolution tunable optical filter
JP2003289173A (ja) * 2002-03-28 2003-10-10 Ando Electric Co Ltd 波長可変機構
US6690690B2 (en) 2002-05-29 2004-02-10 Lightgage, Inc. Tunable laser system having an adjustable external cavity
US6671425B1 (en) 2002-06-18 2003-12-30 Celight Method and system for acoustically tuning a light source
WO2004001330A2 (en) * 2002-06-24 2003-12-31 Lightgage, Inc. Multi-stage data processing for frequency-scanning interferometer
US7130059B2 (en) * 2002-06-24 2006-10-31 Light Gage, Inc Common-path frequency-scanning interferometer
US6882433B2 (en) 2002-07-01 2005-04-19 Lightgage, Inc. Interferometer system of compact configuration
WO2004003464A2 (en) * 2002-07-01 2004-01-08 Lightgage, Inc. Frequency-scanning interferometer with non-specular reference surface
US6636536B1 (en) * 2002-09-30 2003-10-21 J. Gilbert Tisue Passive thermal compensation for wavelength agile laser tuners
US6731661B2 (en) 2002-10-01 2004-05-04 Agilent Technologies, Inc. Tuning mechanism for a tunable external-cavity laser
US6940879B2 (en) * 2002-12-06 2005-09-06 New Focus, Inc. External cavity laser with dispersion compensation for mode-hop-free tuning
US7024066B1 (en) * 2003-04-07 2006-04-04 Luxtera, Inc. Littrow gratings as alignment structures for the wafer level testing of optical and optoelectronic chips
KR20050025538A (ko) * 2003-09-08 2005-03-14 삼성전자주식회사 조명장치
US20050163172A1 (en) * 2004-01-27 2005-07-28 Joachim Sacher High-power laser diode arrangement with external resonator
JP4073886B2 (ja) * 2004-03-30 2008-04-09 アンリツ株式会社 可変波長光源
JP3795500B2 (ja) * 2004-05-11 2006-07-12 独立行政法人科学技術振興機構 リトロー型外部共振器半導体レーザーにおける光軸のずれの補正方法および装置
ATE400911T1 (de) 2004-06-16 2008-07-15 Univ Danmarks Tekniske Segmentiertes diodenlasersystem
KR100550141B1 (ko) * 2004-08-09 2006-02-08 한국전자통신연구원 가변 광 편향기를 이용한 파장 가변형 외부 공진 레이저다이오드
US20070292478A1 (en) 2004-08-30 2007-12-20 Popowski Youri Medical Implant Provided with Inhibitors of Atp Synthesis
JP2006086430A (ja) * 2004-09-17 2006-03-30 Yokogawa Electric Corp 波長可変光源
US7653094B2 (en) * 2005-03-24 2010-01-26 Mitutoyo Corporation External cavity laser with flexure tuning element
JP2008536333A (ja) * 2005-04-13 2008-09-04 コーニング インコーポレイテッド 同調可能外部キャビティレーザのためのモード整合システム
US7903704B2 (en) * 2006-06-23 2011-03-08 Pranalytica, Inc. Tunable quantum cascade lasers and photoacoustic detection of trace gases, TNT, TATP and precursors acetone and hydrogen peroxide
DE102007028499B4 (de) 2007-06-18 2011-08-25 TOPTICA Photonics AG, 82166 Abstimmbares Diodenlasersystem mit externem Resonator
US8107509B2 (en) * 2008-02-04 2012-01-31 National Institute Of Metrology P.R. China Monolithic folded F-P cavity and semiconductor laser using the same
US7636376B2 (en) * 2008-03-21 2009-12-22 Ondax, Inc. Method and apparatus for wavelength tuning laser diodes
US8049885B1 (en) * 2008-05-15 2011-11-01 Ondax, Inc. Method and apparatus for large spectral coverage measurement of volume holographic gratings
US7733925B2 (en) * 2008-07-07 2010-06-08 Daylight Solutions, Inc. Continuous wavelength tunable laser source with optimum positioning of pivot axis for grating
US7986407B2 (en) 2008-08-04 2011-07-26 Ondax, Inc. Method and apparatus using volume holographic wavelength blockers
US8369017B2 (en) * 2008-10-27 2013-02-05 Ondax, Inc. Optical pulse shaping method and apparatus
GB201211296D0 (en) * 2012-06-23 2012-08-08 Bae Systems Plc Apparatus and methods for combining and separating multiple beams
US9599565B1 (en) 2013-10-02 2017-03-21 Ondax, Inc. Identification and analysis of materials and molecular structures
US9587983B1 (en) 2015-09-21 2017-03-07 Ondax, Inc. Thermally compensated optical probe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690642A (en) * 1979-12-23 1981-07-22 Kyoto Giken:Kk Optical communication system
JPS5799793A (en) * 1980-12-14 1982-06-21 Takumi Tomijima Low-coherent oscillation control of semiconductor laser
US5319668A (en) * 1992-09-30 1994-06-07 New Focus, Inc. Tuning system for external cavity diode laser
US5379310A (en) * 1993-05-06 1995-01-03 Board Of Trustees Of The University Of Illinois External cavity, multiple wavelength laser transmitter
FR2724496B1 (fr) * 1994-09-13 1996-12-20 Photonetics Source laser monomode accordable en longueur d'onde a cavite externe autoalignee

Also Published As

Publication number Publication date
EP0917261B1 (de) 2001-10-24
DE69510420T2 (de) 1999-12-30
US5594744A (en) 1997-01-14
DE69523485D1 (de) 2001-11-29
EP0917261A1 (de) 1999-05-19
US5802085A (en) 1998-09-01
DE69510420D1 (de) 1999-07-29
EP0702438A1 (de) 1996-03-20
FR2724496A1 (fr) 1996-03-15
FR2724496B1 (fr) 1996-12-20
EP0702438B1 (de) 1999-06-23

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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: ANRITSU INSTRUMENTS SAS, VILLEBON SUR YVETTE, FR

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

Owner name: YENISTA OPTICS S.A., LANNION, FR

8328 Change in the person/name/address of the agent

Representative=s name: THOEMEN UND KOLLEGEN, 30175 HANNOVER