Apparatus and method for measurement of weak optical absorptions by thermally induced laser pulsing
Abstract
The thermal lensing phenomenon is used as the basis for measurement of weak optical absorptions when a cell containing the sample to be investigated is inserted into a normally continuous-wave operation laser-pumped dye laser cavity for which the output coupler is deliberately tilted relative to intracavity circulating laser light, and pulsed laser output ensues, the pulsewidth of which can be related to the sample absorptivity by a simple algorithm or calibration curve. A minimum detection limit of less than 10[sup [minus]5] cm[sup [minus]1] has been demonstrated using this technique. 6 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7001549
- Patent Number(s):
- 4544274
- Application Number:
- PPN: US 6-386372
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 8 Jun 1982
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; MATERIALS; OPTICAL PROPERTIES; OPTICAL EQUIPMENT; DESIGN; ABSORPTION; ABSORPTIVITY; DYE LASERS; LASER CAVITIES; LASER RADIATION; MEASURING INSTRUMENTS; MEASURING METHODS; ELECTROMAGNETIC RADIATION; EQUIPMENT; LASERS; LIQUID LASERS; PHYSICAL PROPERTIES; RADIATIONS; SORPTION; 440600* - Optical Instrumentation- (1990-)
Citation Formats
Cremers, D A, and Keller, R A. Apparatus and method for measurement of weak optical absorptions by thermally induced laser pulsing. United States: N. p., 1985.
Web.
Cremers, D A, & Keller, R A. Apparatus and method for measurement of weak optical absorptions by thermally induced laser pulsing. United States.
Cremers, D A, and Keller, R A. Tue .
"Apparatus and method for measurement of weak optical absorptions by thermally induced laser pulsing". United States.
@article{osti_7001549,
title = {Apparatus and method for measurement of weak optical absorptions by thermally induced laser pulsing},
author = {Cremers, D A and Keller, R A},
abstractNote = {The thermal lensing phenomenon is used as the basis for measurement of weak optical absorptions when a cell containing the sample to be investigated is inserted into a normally continuous-wave operation laser-pumped dye laser cavity for which the output coupler is deliberately tilted relative to intracavity circulating laser light, and pulsed laser output ensues, the pulsewidth of which can be related to the sample absorptivity by a simple algorithm or calibration curve. A minimum detection limit of less than 10[sup [minus]5] cm[sup [minus]1] has been demonstrated using this technique. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {10}
}
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