Accession Number : ADA134291

Title :   Photothermal Spectroscopy Using a Pyroelectric Thin Film Detector.

Descriptive Note : Technical rept.,

Corporate Author : INTERNATIONAL BUSINESS MACHINES CORP SAN JOSE CALIF SAN JOSE RESEARCH LAB

Personal Author(s) : Coufal,H

PDF Url : ADA134291

Report Date : 16 Sep 1983

Pagination or Media Count : 15

Abstract : The application of pyroelectric thin film transducers for photothermal studies is described. The sensitivity and versatility of pyroelectric detection is demonstrated by spectroscopic studies of neodymium oxide doped poly(methylmethacrylate) films. At energy fluences of less than 10 mJ/sq cm, sensitivities of 10 to the 14th power molecules/sq cm are achieved with a conventional amplitude modulated light source as well as with a pulsed laser. A detector response time of less than 100 ns is observed with pulsed excitation.

Descriptors :   *Polymethyl methacrylate, *Detectors, *Pyroelectricity, *Spectroscopy, Transducers, Calorimetry, Photothermal energy, Thin films, Excitation, Pulsed lasers, Sensitivity

Subject Categories : Plastics
      Infrared Detection and Detectors
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE