WO2003075078A3 - Laser tuning by spectrally dependent spatial filtering - Google Patents

Laser tuning by spectrally dependent spatial filtering Download PDF

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Publication number
WO2003075078A3
WO2003075078A3 PCT/US2003/005930 US0305930W WO03075078A3 WO 2003075078 A3 WO2003075078 A3 WO 2003075078A3 US 0305930 W US0305930 W US 0305930W WO 03075078 A3 WO03075078 A3 WO 03075078A3
Authority
WO
WIPO (PCT)
Prior art keywords
sdsf
tuning
cavity
laser
tuning mechanism
Prior art date
Application number
PCT/US2003/005930
Other languages
French (fr)
Other versions
WO2003075078A2 (en
Inventor
Barbara Paldus
Jinchun Xie
Robert Lodenkamper
David M Adams
Eric Crosson
Alexander Katchanov
Grzegorz Pakulsi
Chris W Rella
Bruce A Richman
Original Assignee
Blue Leaf Inc
Barbara Paldus
Jinchun Xie
Robert Lodenkamper
David M Adams
Eric Crosson
Alexander Katchanov
Grzegorz Pakulsi
Chris W Rella
Bruce A Richman
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 Blue Leaf Inc, Barbara Paldus, Jinchun Xie, Robert Lodenkamper, David M Adams, Eric Crosson, Alexander Katchanov, Grzegorz Pakulsi, Chris W Rella, Bruce A Richman filed Critical Blue Leaf Inc
Priority to AU2003223204A priority Critical patent/AU2003223204A1/en
Publication of WO2003075078A2 publication Critical patent/WO2003075078A2/en
Publication of WO2003075078A3 publication Critical patent/WO2003075078A3/en

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
    • 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
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1068—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using an acousto-optical device
    • 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
    • H01S5/1003—Waveguide having a modified shape along the axis, e.g. branched, curved, tapered, voids
    • H01S5/101—Curved waveguide
    • 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
    • H01S5/1082—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 with a special facet structure, e.g. structured, non planar, oblique
    • H01S5/1085—Oblique facets
    • 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
    • H01S5/142—External cavity lasers using a wavelength selective device, e.g. a grating or etalon which comprises an additional resonator

Abstract

A laser tuning mechanism (30) which embodies “spectrally dependent spatial filtering”, SDSF, and contemplates two key elements of the tuning mechanism. The first element of the SDSF tuning mechanism is a spectrally dependent beam distortion provided by an SDSF tuning element (20) in a laser cavity. The second element of the SDSF tuning mechanism is an intra-cavity spatial filter (38) which makes the round trip cavity loss a sensitive function of both beam distortion and cavity alignment. Such a laser can be aligned so that a specific beam distortion, which is provided by the SDSF tuning element (20) at a tunable wavelength, is required to obtain minimum round trip cavity loss, thereby providing tunable laser emission. A preferred embodiment of the SDSF tuning mechanism is an external cavity semiconductor laser having a zeroth order acousto-optic tuning element (50-B).
PCT/US2003/005930 2002-02-28 2003-02-27 Laser tuning by spectrally dependent spatial filtering WO2003075078A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003223204A AU2003223204A1 (en) 2002-02-28 2003-02-27 Laser tuning by spectrally dependent spatial filtering

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8628302A 2002-02-28 2002-02-28
US10/086,283 2002-02-28

Publications (2)

Publication Number Publication Date
WO2003075078A2 WO2003075078A2 (en) 2003-09-12
WO2003075078A3 true WO2003075078A3 (en) 2004-01-22

Family

ID=27753816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/005930 WO2003075078A2 (en) 2002-02-28 2003-02-27 Laser tuning by spectrally dependent spatial filtering

Country Status (2)

Country Link
AU (1) AU2003223204A1 (en)
WO (1) WO2003075078A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2958481A4 (en) * 2013-02-20 2017-03-08 Sloan-Kettering Institute for Cancer Research Wide field raman imaging apparatus and associated methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945539A (en) * 1988-02-17 1990-07-31 The General Electric Company, P.L.C. Acousto-optic tunable filter
US5815277A (en) * 1997-06-20 1998-09-29 The Board Of Trustees Of The Leland Stanford Junior Univesity Deflecting light into resonant cavities for spectroscopy
US5953154A (en) * 1996-04-30 1999-09-14 Rikagaku Kenkyusho Optically parametric oscillator and wavelength-tunable laser system
US6526079B1 (en) * 1999-08-10 2003-02-25 Coretek, Inc. Single etalon optical wavelength reference device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945539A (en) * 1988-02-17 1990-07-31 The General Electric Company, P.L.C. Acousto-optic tunable filter
US5953154A (en) * 1996-04-30 1999-09-14 Rikagaku Kenkyusho Optically parametric oscillator and wavelength-tunable laser system
US5815277A (en) * 1997-06-20 1998-09-29 The Board Of Trustees Of The Leland Stanford Junior Univesity Deflecting light into resonant cavities for spectroscopy
US6526079B1 (en) * 1999-08-10 2003-02-25 Coretek, Inc. Single etalon optical wavelength reference device

Also Published As

Publication number Publication date
AU2003223204A1 (en) 2003-09-16
AU2003223204A8 (en) 2003-09-16
WO2003075078A2 (en) 2003-09-12

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