Piezoelectric detection of photoacoustic signals.

Piezoelectric detection of photoacoustic signals offers a number of advantages over the better known microphonic technique for condensed phase samples. Experimental techniques are greatly simplified by taking advantage of the acoustic impedance match offered by solid state detectors with solid or liquid samples. Such piezoelectric detectors prove suitable for ac steady state measurements as well as impulse-transient response detectors. Several example spectra of Nd(III) are presented with emphasis on the effects of the fluorescence-lifetime in Nd:glass laser material.

[1]  Robert Lee Melcher,et al.  20‐MHz acoustic waves from pulsed thermoelastic expansions of constrained surfaces , 1977 .

[2]  C. M. Percival.  Laser‐Generated Stress Waves in a Dispersive Elastic Rod , 1967 .

[3]  A. Bell.  LXVIII. Upon the production of sound by radiant energy , 1881 .

[4]  G. S. Bakken,et al.  Doppler-shifted reflections of x rays in beam foil spectroscopy: comments. , 1976, Applied optics.

[5]  K. Kaya,et al.  Triplet states of biacetyl and energy transfer as revealed by opto‐acoustic spectroscopy , 1974 .

[6]  J. Callis.  The Calorimetric Detection of Excited States* , 1976, Journal of research of the National Bureau of Standards. Section A, Physics and chemistry.

[7]  Richard M. White,et al.  Elastic Wave Generation by Electron Bombardment or Electromagnetic Wave Absorption , 1963 .

[8]  N. A. Kuebler,et al.  Radiationless decay in the aromatic ketones as studied by optoacoustic spectroscopy , 1975 .

[9]  N. A. Kuebler,et al.  Radiationless relaxation in solids as measured by a heat‐pulse technique , 1977 .

[10]  A. Demaria,et al.  LASER‐INDUCED MICROWAVE SOUND BY SURFACE HEATING , 1967 .

[11]  A. Rosencwaig.  Photoacoustic spectroscopy. New tool for investigation of solids , 1975 .

[12]  H. Schlossberg,et al.  Photoacoustic technique for determining optical absorption coefficients in solids. , 1977, Applied optics.

[13]  D. J. McCloskey,et al.  Thermoelastic Stress Production in Solids , 1968 .

[14]  R. Kniseley,et al.  Photoacoustic spectroscopy with condensed samples. , 1976, Applied optics.

[15]  M. M. Carroll,et al.  Thermoelastic waves generated by laser beams of low power , 1975 .

[16]  Richard M. White,et al.  Excitation of Surface Elastic Waves by Transient Surface Heating , 1968 .