Published March 1, 1986
| Version v1
Journal article
Trace gas detection by laser intracavity photothermal spectroscopy
Creators
- 1. Brookhaven National Laboratory, Department of Applied Science, Environmental Chemistry Division, Upton, New York 11973
Description
A novel laser intracavity photothermal detector is described. In this scheme, sample absorption of the pump laser power takes place within the cavity of a probe He-Ne laser causing modulation in the gain and in turn the output power. Comparison of this intracavity detector with two other photothermal techniques, namely, phase fluctuation optical heterodyne spectroscopy and thermal beam deflection, is made in terms of practicality and sensitivity. For in situ measurements, sensitivity of 0.5 x 10-7 cm-1 for a probe length of 3 cm has been achieved
Additional details
Publishing Information
- Journal Title
- Appl. Opt.
- Journal Volume
- 25
- Journal Issue
- 5
- Series
- Appl. Opt.
- Journal Page Range
- 749-752
- ISSN
- 0003-6935
- CODEN
- APOPA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 17069934
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; FLUCTUATIONS; FLUORESCENCE; GAIN; HELIUM-NEON LASERS; LASER SPECTROSCOPY; NITROGEN; QUANTITY RATIO; SENSITIVITY; SULFUR FLUORIDES; TEMPERATURE DEPENDENCE
- Descriptors DEC
- AMPLIFICATION; AMPLIFIERS; ELEMENTS; EMISSION; EQUIPMENT; FLUORIDES; FLUORINE COMPOUNDS; GAS LASERS; HALIDES; HALOGEN COMPOUNDS; LASERS; LUMINESCENCE; NONMETALS; PHOTON EMISSION; SPECTROSCOPY; SULFUR COMPOUNDS; VARIATIONS