Spatial filters for high average power lasers

Erlandson, Alvin C

Title: Spatial filters for high average power lasers

Abstract

A spatial filter includes a first filter element and a second filter element overlapping with the first filter element. The first filter element includes a first pair of cylindrical lenses separated by a first distance. Each of the first pair of cylindrical lenses has a first focal length. The first filter element also includes a first slit filter positioned between the first pair of cylindrical lenses. The second filter element includes a second pair of cylindrical lenses separated by a second distance. Each of the second pair of cylindrical lenses has a second focal length. The second filter element also includes a second slit filter positioned between the second pair of cylindrical lenses.

Inventors:: Erlandson, Alvin C

Issue Date:: 2012-11-27

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1080283

Patent Number(s):: 8320056

Application Number:: 12/544,988

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

Patent Classifications (CPCs):: 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

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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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
H01S3/0064 - {Anti-reflection devices, e.g. optical isolaters
H01S3/005 - {Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
H01S3/2341 - {Four pass amplifiers}
H01S3/0805 - {by apertures, e.g. pinholes, knife-edges, apodizers}
H01S3/235 - {Regenerative amplifiers}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B19/0014 - {at least one surface having optical power}
G02B19/0052 - {the light source comprising a laser diode

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
H01S3/2333 - {Double-pass amplifiers}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B27/46 - Systems using spatial filters
G02B27/0988 - {Diaphragms, spatial filters, masks for removing or filtering a part of the beam}
G02B27/0966 - {Cylindrical lenses

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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


                    Erlandson, Alvin C. Spatial filters for high average power lasers.  United States: N. p., 2012. 
        Web.

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                    Erlandson, Alvin C. Spatial filters for high average power lasers.  United States.

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                    Erlandson, Alvin C. Tue .  
        "Spatial filters for high average power lasers".  United States.  https://www.osti.gov/servlets/purl/1080283.

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@article{osti_1080283,

  title        = {Spatial filters for high average power lasers},

  author       = {Erlandson, Alvin C},

  abstractNote = {A spatial filter includes a first filter element and a second filter element overlapping with the first filter element. The first filter element includes a first pair of cylindrical lenses separated by a first distance. Each of the first pair of cylindrical lenses has a first focal length. The first filter element also includes a first slit filter positioned between the first pair of cylindrical lenses. The second filter element includes a second pair of cylindrical lenses separated by a second distance. Each of the second pair of cylindrical lenses has a second focal length. The second filter element also includes a second slit filter positioned between the second pair of cylindrical lenses.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2012},

  month        = {11}

}

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Works referenced in this record:

Laser beam filtering by refractive or diffractive microstructures
conference, August 2005

Kaempfe, T.; Kley, E. -B.; Tuennermann, A.
Optics & Photonics 2005, SPIE Proceedings
https://doi.org/10.1117/12.617335

High-damage-threshold pinhole for glass fusion laser applications
conference, July 1999

Kurnit, Norman A.; Letzring, S. A.; Johnson, Randall P.
Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, SPIE Proceedings
https://doi.org/10.1117/12.354211

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Title: Spatial filters for high average power lasers

Abstract

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