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Title: AlGaAs diode pumped tunable chromium lasers

Abstract

This patent describes a laser system comprising a laser crystal and a laser pump to pump the crystal. It comprises the laser crystal is doped with impurities that give rise to an absorption band spanning a bounded continuous set of wavelengths such that when incident monochromatic radiation within the set of wavelengths is absorbed by the crystal it emits coherent radiation defining an emission band; the absorption band is characterized by a peak absorption cross section at a first wavelength which decreases if the wavelength of incident monochromatic radiation deviates from the first wavelength, and approaches zero if the wavelength of incident monochromatic radiation approaches the bounds of the absorption band; the laser pump is essentially monochromatic at a second wavelength within the absorption band; and the second wavelength is removed from the first wavelength towards the bounds of the absorption band such that the absorption cross section at the second wavelength is at least an order of magnitude less than the cross section at the first wavelength.

Inventors:
;
Publication Date:
OSTI Identifier:
5019359
Patent Number(s):
US 5105434; A
Application Number:
PPN: US 7-698038
Assignee:
NOV; NOV-92-031147; EDB-92-118785
Resource Type:
Patent
Resource Relation:
Patent File Date: 10 May 1991
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; CHROMIUM; STIMULATED EMISSION; LASERS; FABRICATION; ABSORPTION SPECTRA; ALUMINIUM ARSENIDES; CRYSTAL LATTICES; GALLIUM ARSENIDES; LASER MATERIALS; MONOCHROMATIC RADIATION; OPTICAL PUMPING; SEMICONDUCTOR DIODES; WAVELENGTHS; ALUMINIUM COMPOUNDS; ARSENIC COMPOUNDS; ARSENIDES; CRYSTAL STRUCTURE; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; ENERGY-LEVEL TRANSITIONS; GALLIUM COMPOUNDS; MATERIALS; METALS; PNICTIDES; PUMPING; RADIATIONS; SEMICONDUCTOR DEVICES; SPECTRA; TRANSITION ELEMENTS; 426002* - Engineering- Lasers & Masers- (1990-); 360606 - Other Materials- Physical Properties- (1992-)

Citation Formats

Krupke, W F, and Payne, S A. AlGaAs diode pumped tunable chromium lasers. United States: N. p., 1992. Web.
Krupke, W F, & Payne, S A. AlGaAs diode pumped tunable chromium lasers. United States.
Krupke, W F, and Payne, S A. 1992. "AlGaAs diode pumped tunable chromium lasers". United States.
@article{osti_5019359,
title = {AlGaAs diode pumped tunable chromium lasers},
author = {Krupke, W F and Payne, S A},
abstractNote = {This patent describes a laser system comprising a laser crystal and a laser pump to pump the crystal. It comprises the laser crystal is doped with impurities that give rise to an absorption band spanning a bounded continuous set of wavelengths such that when incident monochromatic radiation within the set of wavelengths is absorbed by the crystal it emits coherent radiation defining an emission band; the absorption band is characterized by a peak absorption cross section at a first wavelength which decreases if the wavelength of incident monochromatic radiation deviates from the first wavelength, and approaches zero if the wavelength of incident monochromatic radiation approaches the bounds of the absorption band; the laser pump is essentially monochromatic at a second wavelength within the absorption band; and the second wavelength is removed from the first wavelength towards the bounds of the absorption band such that the absorption cross section at the second wavelength is at least an order of magnitude less than the cross section at the first wavelength.},
doi = {},
url = {https://www.osti.gov/biblio/5019359}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {4}
}