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Title: Compact and highly efficient laser pump cavity

Abstract

A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.

Inventors:
 [1];  [2];  [3]
  1. (Dublin, CA)
  2. (Castro Valley, CA)
  3. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872637
Patent Number(s):
5978407
Assignee:
United States Enrichment Corporation (Bethesda, MD) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
compact; highly; efficient; laser; pump; cavity; side-pumped; design; non-conventional; optics; injection; laser-diode; light; chamber; plurality; elongated; concentration; channels; embodiment; compound; parabolic; concentrators; cpc; exit; apertures; escape; pumping; multiply; reflected; rod; effectively; traps; radiation; inside; encloses; enables; uniform; effective; recycle; leading; significantly; improved; performance; widens; acceptable; wavelength; diodes; resulting; reliable; cost; significantly improved; laser rod; laser pumping; highly efficient; highly effective; pumped laser; exit aperture; laser pump; uniform laser; laser performance; pump radiation; pumping chamber; improved laser; radiation wavelength; pump cavity; pump chamber; cavity design; compound parabolic; parabolic concentrator; effectively traps; efficient laser; significantly improve; conventional optics; /372/

Citation Formats

Chang, Jim J., Bass, Isaac L., and Zapata, Luis E. Compact and highly efficient laser pump cavity. United States: N. p., 1999. Web.
Chang, Jim J., Bass, Isaac L., & Zapata, Luis E. Compact and highly efficient laser pump cavity. United States.
Chang, Jim J., Bass, Isaac L., and Zapata, Luis E. Fri . "Compact and highly efficient laser pump cavity". United States. https://www.osti.gov/servlets/purl/872637.
@article{osti_872637,
title = {Compact and highly efficient laser pump cavity},
author = {Chang, Jim J. and Bass, Isaac L. and Zapata, Luis E.},
abstractNote = {A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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