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Title: Fourier plane image amplifier

Abstract

A solid state laser is frequency tripled to 0.3 .mu.m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only .about.1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power.

Inventors:
 [1];  [2];  [1];  [3]
  1. (Livermore, CA)
  2. (San Ramon, CA)
  3. (Tracy, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
870206
Patent Number(s):
5475527
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fourier; plane; image; amplifier; solid; laser; frequency; tripled; portion; split; generates; stokes; seed; power; oscillator; output; passes; mask; appropriate; pattern; meanwhile; bulk; focused; larger; stimulated; brillouin; scattering; sbs; beam; directed; cell; opposite; direction; majority; amplification; takes; focus; transform; holes; occupy; preferentially; amplified; imaged; multichip; module; drilled; 10th; competitive; concept; allows; expensive; masks; process; requires; mask image; opposite direction; laser output; power output; fourier transform; laser power; stimulated brillouin; brillouin scattering; power oscillator; amplified output; fourier plane; image amplifier; plane image; /359/372/

Citation Formats

Hackel, Lloyd A., Hermann, Mark R., Dane, C. Brent, and Tiszauer, Detlev H. Fourier plane image amplifier. United States: N. p., 1995. Web.
Hackel, Lloyd A., Hermann, Mark R., Dane, C. Brent, & Tiszauer, Detlev H. Fourier plane image amplifier. United States.
Hackel, Lloyd A., Hermann, Mark R., Dane, C. Brent, and Tiszauer, Detlev H. Sun . "Fourier plane image amplifier". United States. https://www.osti.gov/servlets/purl/870206.
@article{osti_870206,
title = {Fourier plane image amplifier},
author = {Hackel, Lloyd A. and Hermann, Mark R. and Dane, C. Brent and Tiszauer, Detlev H.},
abstractNote = {A solid state laser is frequency tripled to 0.3 .mu.m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only .about.1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

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