Parasitic oscillation suppression in solid state lasers using absorbing thin films

Title: Parasitic oscillation suppression in solid state lasers using absorbing thin films

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Abstract

A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber.

Inventors:

Zapata, Luis E ^[1]

Livermore, CA

Publication Date:: 1994-01-01

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

OSTI Identifier:: 869429

Patent Number(s):: US 5335237

Assignee:: United States of America as represented by United States (Washington, DC)

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: parasitic; oscillation; suppression; solid; lasers; absorbing; films; film; bonded; surfaces; laser; medium; metal-dielectric; multilayer; optimized; broad; range; incidence; angles; resistant; corrosive; erosive; effects; coolant; water; forced; convection; cooling; oscillations; hamper; operation; causing; decay; stored; energy; amplified; rays; trapped; total; partial; internal; reflections; facets; zigzag; intended; average; power; require; absorber; multilayer film; internal reflection; broad range; average power; stored energy; power operation; incidence angle; forced convection; convection cooling; incidence angles; internal reflections; absorbing metal; parasitic oscillation; zigzag laser; /372/

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                    Zapata, Luis E. Parasitic oscillation suppression in solid state lasers using absorbing thin films.  United States: N. p., 1994. 
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                    Zapata, Luis E. Parasitic oscillation suppression in solid state lasers using absorbing thin films.  United States.

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                    Zapata, Luis E. Sat .  
        "Parasitic oscillation suppression in solid state lasers using absorbing thin films".  United States.  https://www.osti.gov/servlets/purl/869429.

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@article{osti_869429,

  title        = {Parasitic oscillation suppression in solid state lasers using absorbing thin films},

  author       = {Zapata, Luis E},

  abstractNote = {A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/869429},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {1}

}

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