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Title: Lensing duct

Abstract

A lensing duct to condense (intensify) light using a combination of front surface lensing and reflective waveguiding. The duct tapers down from a wide input side to a narrow output side, with the input side being lens-shaped and coated with an antireflective coating for more efficient transmission into the duct. The four side surfaces are uncoated, preventing light from escaping by total internal reflection as it travels along the duct (reflective waveguiding). The duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials, and can be fabricated from inexpensive glass and plastic.

Inventors:
 [1]
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  1. (Livermore, CA), Benett
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
869269
Patent Number(s):
5307430
Assignee:
United States of America as represented by United States (Washington, DC)
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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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
lensing; duct; condense; intensify; light; combination; front; surface; reflective; waveguiding; tapers; wide; input; narrow; output; lens-shaped; coated; antireflective; coating; efficient; transmission; surfaces; uncoated; preventing; escaping; total; internal; reflection; travels; various; applications; intensifying; coupling; diode; array; pump; solid; lasing; materials; fabricated; inexpensive; glass; plastic; antireflective coating; reflective coating; internal reflection; pump light; diode array; front surface; total internal; various applications; reflective waveguiding; lensing duct; narrow output; wide input; duct tapers; /385/359/372/

Citation Formats

Beach, Raymond J. Lensing duct. United States: N. p., 1994. Web.
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Beach, Raymond J. Lensing duct. United States.
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Beach, Raymond J. Sat . "Lensing duct". United States. https://www.osti.gov/servlets/purl/869269.
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@article{osti_869269,
title = {Lensing duct},
author = {Beach, Raymond J.},
abstractNote = {A lensing duct to condense (intensify) light using a combination of front surface lensing and reflective waveguiding. The duct tapers down from a wide input side to a narrow output side, with the input side being lens-shaped and coated with an antireflective coating for more efficient transmission into the duct. The four side surfaces are uncoated, preventing light from escaping by total internal reflection as it travels along the duct (reflective waveguiding). The duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials, and can be fabricated from inexpensive glass and plastic.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}
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Works referenced in this record:

Passively Q-switched transverse-diode-pumped Nd^3+:YLF laser oscillator
journal, January 1992

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