WO2006045304A3 - Laserresonator mit internem strahlteiler - Google Patents

Laserresonator mit internem strahlteiler Download PDF

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Publication number
WO2006045304A3
WO2006045304A3 PCT/DE2005/001959 DE2005001959W WO2006045304A3 WO 2006045304 A3 WO2006045304 A3 WO 2006045304A3 DE 2005001959 W DE2005001959 W DE 2005001959W WO 2006045304 A3 WO2006045304 A3 WO 2006045304A3
Authority
WO
WIPO (PCT)
Prior art keywords
reinjection
laser
laser resonator
reflectivity
gain
Prior art date
Application number
PCT/DE2005/001959
Other languages
English (en)
French (fr)
Other versions
WO2006045304A2 (de
Inventor
Volker Raab
Original Assignee
Volker Raab
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 Volker Raab filed Critical Volker Raab
Priority to EP05810669A priority Critical patent/EP1810381B1/de
Priority to DE502005007672T priority patent/DE502005007672D1/de
Priority to AT05810669T priority patent/ATE436107T1/de
Publication of WO2006045304A2 publication Critical patent/WO2006045304A2/de
Publication of WO2006045304A3 publication Critical patent/WO2006045304A3/de
Priority to US11/789,720 priority patent/US7609744B2/en

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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
    • 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
    • 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
    • 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
    • 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
    • H01S3/0818—Unstable resonators
    • 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
    • H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression
    • 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
    • H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression
    • H01S3/0823—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression incorporating a dispersive element, e.g. a prism for wavelength selection
    • 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
    • H01S5/1053—Comprising an active region having a varying composition or cross-section in a specific direction
    • H01S5/1064—Comprising an active region having a varying composition or cross-section in a specific direction varying width along the optical axis
    • 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
    • H01S5/1089—Unstable resonators
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4031—Edge-emitting structures
    • H01S5/4056—Edge-emitting structures emitting light in more than one direction

Abstract

Ein einfacher und kompakter Laserresonator wird vorgestellt, mit dem es möglich ist, ein Gainelement, vorzugsweise einen Halbleiterlaser, der mindestens zwei Emissionsrichtungen besitzt, symmetrisiert zu betreiben. Dadurch lassen sich höhere Ausgangsleistungen und/oder bessere Strahlqualität und/oder bessere spektrale Eigenschaften erzielen. Der Laserresonator ist sehr kompakt und besteht im Idealfall aus lediglich drei Elementen: dem laseraktiven Medium (1), einer zylindrischen Kollimationslinse (5) und einem an den Winkel zwischen den beiden Strahlen (4) angepassten Prisma (6), das mit einem Strahlteiler (7) und einem Rückkoppelelement (9) beschichtet ist (vgl. Abb.). Vorteilhaft besitzt das Gainmedium (1) ein Rückkoppelelement (2) und eine Antireflexschicht (3). Soll auf eine Antireflexschicht (11) verzichtet werden, so kann die Brewster-Bedingung erfüllt werden. Die Reflektivitäten der Elemente (7) und (9) bestimmen die relativen Leistungsanteile in den Strahlen (10) und (14). Wenn der Strahlteiler 50% Reflektivität besitzt, tragen beide Rückkoppeläste (4) gleich viel Leistung und meist verschwindet der Strahl (14). Wenn der Teiler eine andere Reflektivität hat, so existiert (14) meist, so dass es dann vorteilhaft sein kann, durch eine hohe Reflektivität des Elements (9) den Strahl (10) zu unterdrücken, wie insbesondere in Bildteil (b) angedeutet. In einer besonders vorteilhaften Anordnung besteht das Gain aus einem Hochleistungs-Diodenlaser, der als Streifenarray ausgeführt ist und/oder der Laserresonator ist längs der Richtung parallel zu den Epitaxie-Ebenen als instabiler Resonator gestaltet. In alternativen Ausformungen kann das Rückkoppelelement (9) auch wellenlängenselektiv sein, beispielsweise in Form eines Gitters, eines dielektrischen Filters, eines holographischen Elements oder Volument-Bragg-Gitters.
PCT/DE2005/001959 2004-10-29 2005-10-28 Laserresonator mit internem strahlteiler WO2006045304A2 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05810669A EP1810381B1 (de) 2004-10-29 2005-10-28 Laserresonator mit internem strahlteiler
DE502005007672T DE502005007672D1 (de) 2004-10-29 2005-10-28 Laserresonator mit internem strahlteiler
AT05810669T ATE436107T1 (de) 2004-10-29 2005-10-28 Laserresonator mit internem strahlteiler
US11/789,720 US7609744B2 (en) 2004-10-29 2007-04-25 Laser resonator comprising an internal beam splitter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004053136.6 2004-10-29
DE102004053136A DE102004053136B4 (de) 2004-10-29 2004-10-29 Laserresonator mit internem Strahlteiler

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/789,720 Continuation-In-Part US7609744B2 (en) 2004-10-29 2007-04-25 Laser resonator comprising an internal beam splitter

Publications (2)

Publication Number Publication Date
WO2006045304A2 WO2006045304A2 (de) 2006-05-04
WO2006045304A3 true WO2006045304A3 (de) 2006-07-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/001959 WO2006045304A2 (de) 2004-10-29 2005-10-28 Laserresonator mit internem strahlteiler

Country Status (5)

Country Link
US (1) US7609744B2 (de)
EP (1) EP1810381B1 (de)
AT (1) ATE436107T1 (de)
DE (2) DE102004053136B4 (de)
WO (1) WO2006045304A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8340151B2 (en) * 2010-12-13 2012-12-25 Ut-Battelle, Llc V-shaped resonators for addition of broad-area laser diode arrays
CN102681197A (zh) * 2012-05-21 2012-09-19 北京国科世纪激光技术有限公司 一种空间滤波器及采用该空间滤波器的激光放大装置
EP2999064A1 (de) * 2014-09-19 2016-03-23 DirectPhotonics Industries GmbH Diodenlaser
US10090639B2 (en) * 2016-01-21 2018-10-02 Luminit Llc Laser diode enhancement device
CN109217092B (zh) * 2017-12-13 2020-07-17 中国航空制造技术研究院 二维体全息光栅激光器的设计方法及其装置
CN112490837B (zh) * 2020-12-14 2024-04-02 中国科学院合肥物质科学研究院 一种四路相干合成激光器

Citations (10)

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Publication number Priority date Publication date Assignee Title
US4426707A (en) * 1981-11-09 1984-01-17 Mcdonnell Douglas Corporation Single mode cavity laser
US4831631A (en) * 1986-09-29 1989-05-16 Siemens Aktiengesellschaft Laser transmitter comprising a semiconductor laser and an external resonator
US4873697A (en) * 1986-09-29 1989-10-10 Siemens Aktiengesellschaft Narrowband laser transmitter having an external resonator from which the output power can be taken
US5046184A (en) * 1990-04-05 1991-09-03 University Of California Method and apparatus for passive mode locking high power lasers
DE4228541C1 (de) * 1992-08-27 1994-01-13 Deutsche Aerospace Festkörperringlaser
WO1998056087A1 (en) * 1997-06-06 1998-12-10 Torsana A/S Laser systems using phase conjugate feedback
WO2002021651A1 (en) * 2000-09-05 2002-03-14 Esko-Graphics A/S Laser system with external optical feedback and use of such system in the graphical industry
WO2002082593A2 (en) * 2001-04-09 2002-10-17 Torsana Laser Technologies A/S Laser apparatus
DE10161076A1 (de) * 2001-12-12 2003-09-11 Univ Potsdam Verfahren und Vorrichtung zur Erzeugung von Licht guter Strahlqualität aus Halbleiter-Laserchips
WO2003084006A2 (en) * 2002-04-03 2003-10-09 Esko-Graphics A/S Laser system

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JPS5743485A (en) * 1980-08-13 1982-03-11 Agency Of Ind Science & Technol Semiconductor ring laser device
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US6005878A (en) * 1997-02-19 1999-12-21 Academia Sinica Efficient frequency conversion apparatus for use with multimode solid-state lasers
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Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426707A (en) * 1981-11-09 1984-01-17 Mcdonnell Douglas Corporation Single mode cavity laser
US4831631A (en) * 1986-09-29 1989-05-16 Siemens Aktiengesellschaft Laser transmitter comprising a semiconductor laser and an external resonator
US4873697A (en) * 1986-09-29 1989-10-10 Siemens Aktiengesellschaft Narrowband laser transmitter having an external resonator from which the output power can be taken
US5046184A (en) * 1990-04-05 1991-09-03 University Of California Method and apparatus for passive mode locking high power lasers
DE4228541C1 (de) * 1992-08-27 1994-01-13 Deutsche Aerospace Festkörperringlaser
WO1998056087A1 (en) * 1997-06-06 1998-12-10 Torsana A/S Laser systems using phase conjugate feedback
WO2002021651A1 (en) * 2000-09-05 2002-03-14 Esko-Graphics A/S Laser system with external optical feedback and use of such system in the graphical industry
US20030165165A1 (en) * 2000-09-05 2003-09-04 Peterson Paul Michael Laser system with external optical feedback and use of such system in the graphical industry
WO2002082593A2 (en) * 2001-04-09 2002-10-17 Torsana Laser Technologies A/S Laser apparatus
DE10161076A1 (de) * 2001-12-12 2003-09-11 Univ Potsdam Verfahren und Vorrichtung zur Erzeugung von Licht guter Strahlqualität aus Halbleiter-Laserchips
WO2003084006A2 (en) * 2002-04-03 2003-10-09 Esko-Graphics A/S Laser system

Also Published As

Publication number Publication date
US7609744B2 (en) 2009-10-27
DE502005007672D1 (de) 2009-08-20
DE102004053136A1 (de) 2006-05-11
EP1810381A2 (de) 2007-07-25
ATE436107T1 (de) 2009-07-15
WO2006045304A2 (de) 2006-05-04
EP1810381B1 (de) 2009-07-08
DE102004053136B4 (de) 2008-04-03
US20080165821A1 (en) 2008-07-10

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