Method and system for homogenizing diode laser pump arrays

Bayramian, Andy J

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Title: Method and system for homogenizing diode laser pump arrays

Abstract

An optical amplifier system includes a diode pump array including a plurality of semiconductor diode laser bars disposed in an array configuration and characterized by a periodic distance between adjacent semiconductor diode laser bars. The periodic distance is measured in a first direction perpendicular to each of the plurality of semiconductor diode laser bars. The diode pump array provides a pump output propagating along an optical path and characterized by a first intensity profile measured as a function of the first direction and having a variation greater than 10%. The optical amplifier system also includes a diffractive optic disposed along the optical path. The diffractive optic includes a photo-thermo-refractive glass member. The optical amplifier system further includes an amplifier slab having an input face and position along the optical path and separated from the diffractive optic by a predetermined distance. A second intensity profile measured at the input face of the amplifier slab as a function of the first direction has a variation less than 10%.

Inventors:: Bayramian, Andy J

Issue Date:: Tue Oct 01 00:00:00 EDT 2013

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1107571

Patent Number(s):: 8547632

Application Number:: 12/544,147

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT

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G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B19/0009 - {having refractive surfaces only}
G02B19/0014 - {at least one surface having optical power}
G02B19/0057 - {in the form of a laser diode array, e.g. laser diode bar
G02B19/0095 - {for use with ultra-violet radiation}
G02B27/0944 - {Diffractive optical elements, e.g. gratings, holograms

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
H01S3/0941 - of a laser diode
H01S5/005 - {Optical devices external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
H01S5/4025 - {Array arrangements, e.g. constituted by discrete laser diodes or laser bar

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Bayramian, Andy J. Method and system for homogenizing diode laser pump arrays.  United States: N. p., 2013. 
        Web.

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                    Bayramian, Andy J. Method and system for homogenizing diode laser pump arrays.  United States.

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                    Bayramian, Andy J. Tue .  
        "Method and system for homogenizing diode laser pump arrays".  United States.  https://www.osti.gov/servlets/purl/1107571.

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@article{osti_1107571,

  title        = {Method and system for homogenizing diode laser pump arrays},

  author       = {Bayramian, Andy J},

  abstractNote = {An optical amplifier system includes a diode pump array including a plurality of semiconductor diode laser bars disposed in an array configuration and characterized by a periodic distance between adjacent semiconductor diode laser bars. The periodic distance is measured in a first direction perpendicular to each of the plurality of semiconductor diode laser bars. The diode pump array provides a pump output propagating along an optical path and characterized by a first intensity profile measured as a function of the first direction and having a variation greater than 10%. The optical amplifier system also includes a diffractive optic disposed along the optical path. The diffractive optic includes a photo-thermo-refractive glass member. The optical amplifier system further includes an amplifier slab having an input face and position along the optical path and separated from the diffractive optic by a predetermined distance. A second intensity profile measured at the input face of the amplifier slab as a function of the first direction has a variation less than 10%.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Oct 01 00:00:00 EDT 2013},

  month        = {Tue Oct 01 00:00:00 EDT 2013}

}

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Works referenced in this record:

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patent, July 1998

Leger, James R.; Goltsos, William
US Patent Document 5,787,107
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Holographic method for producing desired wavefront transformations
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Semiconductor laser light emitting apparatus and solid-state laser rod pumping module
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Laser beam shaping by holographic optical elements
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Ushiro, Toshihiko; Matsuura, Takashi
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Similar Records

Title: Method and system for homogenizing diode laser pump arrays

Abstract

Citation Formats

Method and apparatus for efficient concentration of light from laser diode arrays patent, July 1998

Holographic method for producing desired wavefront transformations patent, October 1985

Apparatus and method for concentrating beams from broad area diode lasers, diode laser bars and/ or diode laser arrays patent, April 2001

Semiconductor laser light emitting apparatus and solid-state laser rod pumping module patent, May 2004

Laser beam shaping by holographic optical elements conference, February 2012

Diode laser array beam homogenizer patent-application, March 2006

Rational design of a diffractive homogenizer for a laser beam journal, January 2002

Beam-homogenizer patent, March 1997

Cavity pumped, solid state lasers patent, April 1994

High power optical fiber laser array holographic coupler manufacturing method patent, June 2009

Efficient beamshaper homogenizer design combining diffractive optical elements, microlens array and random phase plate journal, January 1999

Optical apparatus for the homogenization of laser radiation and the generation of several lighting fields patent, August 1998

Diffractive optical elements in photosensitive inorganic glasses conference, November 2001

Optical Diffraction Element of Refractive-Index-Modulated Type and Projector Including the Same patent-application, September 2007

Optical System and Method for Use in Projection Systems patent-application, November 2007

Configuration of and method for optical beam shaping of diode laser bars patent, March 2004

Method and apparatus for efficient concentration of light from laser diode arrays
patent, July 1998

Holographic method for producing desired wavefront transformations
patent, October 1985

Apparatus and method for concentrating beams from broad area diode lasers, diode laser bars and/ or diode laser arrays
patent, April 2001

Semiconductor laser light emitting apparatus and solid-state laser rod pumping module
patent, May 2004

Laser beam shaping by holographic optical elements
conference, February 2012

Diode laser array beam homogenizer
patent-application, March 2006

Rational design of a diffractive homogenizer for a laser beam
journal, January 2002

Beam-homogenizer
patent, March 1997

Cavity pumped, solid state lasers
patent, April 1994

High power optical fiber laser array holographic coupler manufacturing method
patent, June 2009

Efficient beamshaper homogenizer design combining diffractive optical elements, microlens array and random phase plate
journal, January 1999

Optical apparatus for the homogenization of laser radiation and the generation of several lighting fields
patent, August 1998

Diffractive optical elements in photosensitive inorganic glasses
conference, November 2001

Optical Diffraction Element of Refractive-Index-Modulated Type and Projector Including the Same
patent-application, September 2007

Optical System and Method for Use in Projection Systems
patent-application, November 2007

Configuration of and method for optical beam shaping of diode laser bars
patent, March 2004