Frequency analysis of pulsed optoacoustic signals and the application to chemical analysis

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Appl. Spectrosc.; (United States)

DOI:https://doi.org/10.1366/0003702824638827· OSTI ID:5319464

Fisher, M R; Fasano, D M; Nogar, N S

The optoacoustic signal generated via pulsed laser excitation-transducer detection is frequency analyzed via a discrete Fourier transform. The frequency spectrum is found to exhibit a pronounced maximum at the transducer resonant frequency. Use of this maximum as a measure of the photoacoustic signal strength allows for discrimination against window absorption and various electrical and mechanical noise sources.

• Research Organization: Department of Chemistry, University of Nebraska, Lincoln, Nebraska 65588 (M.R.F., D.M.F.), and University of California, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (N.S.N).
• OSTI ID: 5319464
• Journal Information: Appl. Spectrosc.; (United States), Journal Name: Appl. Spectrosc.; (United States) Vol. 36:2; ISSN APSPA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ALKALI METAL COMPOUNDS
CHEMICAL ANALYSIS
CHROMIUM COMPOUNDS
CYANIDES
ELECTROMAGNETIC RADIATION
FOURIER TRANSFORMATION
FREQUENCY ANALYSIS
FREQUENCY RANGE
INTEGRAL TRANSFORMATIONS
KHZ RANGE
LASER RADIATION
LASER SPECTROSCOPY
PHOTOACOUSTIC SPECTROSCOPY
POTASSIUM COMPOUNDS
PULSES
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
RESOLUTION
SPECTROSCOPY
TIME RESOLUTION
TIMING PROPERTIES
TRANSFORMATIONS
TRANSITION ELEMENT COMPOUNDS