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Title: Laser diode assembly including a cylindrical lens

Abstract

The present invention provides a diffraction limited, high numerical aperture (fast) cylindrical microlens. The method for making the microlens is adaptable to produce a cylindrical lens that has almost any shape on its optical surfaces. The cylindrical lens may have a shape, such as elliptical or hyperbolic, designed to transform some particular given input light distribution into some desired output light distribution. In the method, the desired shape is first formed in a glass preform. Then, the preform is heated to the minimum drawing temperature and a fiber is drawn from it. The cross-sectional shape of the fiber bears a direct relation to the shape of the preform from which it was drawn. During the drawing process, the surfaces become optically smooth due to fire polishing.

Inventors:
 [1];  [2]
  1. (San Jose, CA)
  2. (Hayward, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
868134
Patent Number(s):
5081639
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
laser; diode; assembly; including; cylindrical; lens; provides; diffraction; limited; numerical; aperture; fast; microlens; method; adaptable; produce; shape; optical; surfaces; elliptical; hyperbolic; designed; transform; particular; input; light; distribution; desired; output; formed; glass; preform; heated; minimum; drawing; temperature; fiber; drawn; cross-sectional; bears; direct; relation; process; optically; smooth; due; fire; polishing; output light; light distribution; numerical aperture; cylindrical lens; input light; laser diode; desired shape; assembly including; diffraction limited; desired output; cross-sectional shape; optical surfaces; smooth due; optically smooth; minimum drawing; glass preform; drawing process; optical surface; fiber bears; direct relation; cylindrical microlens; drawing temperature; fire polishing; diode assembly; /372/359/

Citation Formats

Snyder, James J., and Reichert, Patrick. Laser diode assembly including a cylindrical lens. United States: N. p., 1992. Web.
Snyder, James J., & Reichert, Patrick. Laser diode assembly including a cylindrical lens. United States.
Snyder, James J., and Reichert, Patrick. Wed . "Laser diode assembly including a cylindrical lens". United States. https://www.osti.gov/servlets/purl/868134.
@article{osti_868134,
title = {Laser diode assembly including a cylindrical lens},
author = {Snyder, James J. and Reichert, Patrick},
abstractNote = {The present invention provides a diffraction limited, high numerical aperture (fast) cylindrical microlens. The method for making the microlens is adaptable to produce a cylindrical lens that has almost any shape on its optical surfaces. The cylindrical lens may have a shape, such as elliptical or hyperbolic, designed to transform some particular given input light distribution into some desired output light distribution. In the method, the desired shape is first formed in a glass preform. Then, the preform is heated to the minimum drawing temperature and a fiber is drawn from it. The cross-sectional shape of the fiber bears a direct relation to the shape of the preform from which it was drawn. During the drawing process, the surfaces become optically smooth due to fire polishing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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