WO2003084006A3 - Laser system - Google Patents

Laser system Download PDF

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Publication number
WO2003084006A3
WO2003084006A3 PCT/DK2003/000213 DK0300213W WO03084006A3 WO 2003084006 A3 WO2003084006 A3 WO 2003084006A3 DK 0300213 W DK0300213 W DK 0300213W WO 03084006 A3 WO03084006 A3 WO 03084006A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
laser
diode member
light beam
plurality
output beams
Prior art date
Application number
PCT/DK2003/000213
Other languages
French (fr)
Other versions
WO2003084006A2 (en )
Inventor
Martin Egede Nielsen
Niels-Soeren Boegh
Original Assignee
Esko Graphics As
Martin Egede Nielsen
Niels-Soeren Boegh
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

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/10Construction 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
    • H01S5/14External cavity lasers
    • H01S5/146External cavity lasers using a fiber as external cavity
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/10Construction 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
    • H01S5/14External cavity lasers
    • H01S5/148External cavity lasers using a Talbot cavity
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S2301/00Functional characteristics
    • H01S2301/18Semiconductor lasers with special structural design for influencing the near- or far-field
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S3/00Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08Construction or shape of optical resonators or components thereof
    • H01S3/08018Mode suppression
    • H01S3/0804Transverse or lateral mode control, e.g. specifically multimode
    • H01S3/0805Transverse or lateral mode control, e.g. specifically multimode by apertures, e.g. pinholes, knife-edges, apodizers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/10Construction 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
    • H01S5/1082Construction 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
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/20Structure 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
    • H01S5/2036Broad area laserse
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4031Edge-emitting structures
    • H01S5/4056Edge-emitting structures emitting light in more than one direction
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES USING STIMULATED EMISSION
    • H01S5/00Semiconductor lasers
    • H01S5/40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4031Edge-emitting structures
    • H01S5/4062Edge-emitting structures with an external cavity or using internal filters, e.g. Talbot filters

Abstract

A laser system for generating a least two output beams comprising a laser multimode diode member (101) emitting a light beam with an intensity distribution comprising a plurality of spatial modes. A dual feedback cavity is provided by first and second selection means (108,110,111) for selecting corresponding to one of said plurality of spatial modes on opposite sides of the optical axis; and first and second reflective members (106,112) where the laser diode member and the reflective members define a dual cavity and are adapted to reflect corresponding feedback fractions of the selected parts of the emitted light beam back into the laser diode member and to produce respective output beams (113,114).
PCT/DK2003/000213 2002-04-03 2003-04-02 Laser system WO2003084006A3 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DKPA200200489 2002-04-03
DKPA200200489 2002-04-03
DKPA200201889 2002-12-10
DKPA200201889 2002-12-10

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20030745252 EP1490934A2 (en) 2002-04-03 2003-04-02 Laser system
JP2003581311A JP2005522039A (en) 2002-04-03 2003-04-02 The laser system, the laser system aligned method, use of the laser system, and an internal drum image setting system

Publications (2)

Publication Number Publication Date
WO2003084006A2 true WO2003084006A2 (en) 2003-10-09
WO2003084006A3 true true WO2003084006A3 (en) 2003-12-31

Family

ID=28676333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2003/000213 WO2003084006A3 (en) 2002-04-03 2003-04-02 Laser system

Country Status (4)

Country Link
EP (1) EP1490934A2 (en)
JP (1) JP2005522039A (en)
CN (1) CN1659753A (en)
WO (1) WO2003084006A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1756922T3 (en) 2004-06-16 2008-11-10 Univ Danmarks Tekniske Segmented diode laser system
JP4671017B2 (en) * 2004-07-12 2011-04-13 ソニー株式会社 Semiconductor laser device
DE102004053136B4 (en) * 2004-10-29 2008-04-03 Raab, Volker, Dr. Laser resonator with internal beam splitter
EP1961086B1 (en) 2005-12-16 2009-07-01 Danmarks Tekniske Universitet Laser system with segmented diode laser
DE102008012028A1 (en) * 2008-02-29 2009-09-10 Fachhochschule Trier An apparatus for laser Doppler velocimetry
CN101752773B (en) 2008-12-05 2012-10-24 中国科学院光电研究院 Laser head
JP6145275B2 (en) * 2013-01-29 2017-06-07 アルファクス株式会社 Profile measurement method of laser light
JP6268004B2 (en) * 2014-03-12 2018-01-24 浜松ホトニクス株式会社 Semiconductor laser device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995050A (en) * 1989-11-17 1991-02-19 Spectra Diode Laboratories, Inc. Diode laser with external lens cavity
US6212216B1 (en) * 1996-12-17 2001-04-03 Ramadas M. R. Pillai External cavity micro laser apparatus
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995050A (en) * 1989-11-17 1991-02-19 Spectra Diode Laboratories, Inc. Diode laser with external lens cavity
US6212216B1 (en) * 1996-12-17 2001-04-03 Ramadas M. R. Pillai External cavity micro laser apparatus
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JENSEN S J ET AL: "STABILITY OF THE SINGLE-MODE OUTPUT OF A LASER DIODE ARRAY WITH PHASE CONJUGATE FEEDBACK", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 76, no. 5, 31 January 2000 (2000-01-31), pages 535 - 537, XP000934642, ISSN: 0003-6951 *

Also Published As

Publication number Publication date Type
EP1490934A2 (en) 2004-12-29 application
CN1659753A (en) 2005-08-24 application
WO2003084006A2 (en) 2003-10-09 application
JP2005522039A (en) 2005-07-21 application

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