An anomalously high efficiency of sound photogeneration in the ensemble of spatially separated CdS microcrystals embedded in zeolite cavities and excited by nsec laser pulses is found. A qualitative explanation of the observed effect is made. The photoacoustic spectra of such specimens which were obtained by gas-microphone detection call made it possible to reconstruct the fundamental absorption edge of CdS microcrystals in the (alpha) less than 10³cm^-1 region. The presented results reflect the efficiency of the absorbed- to-thermal energy conversion.

Date Published: 3 November 1995
PDF: 4 pages
Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); doi: 10.1117/12.226196

Published in SPIE Proceedings Vol. 2648:
International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics
Sergey V. Svechnikov; Mikhail Ya. Valakh, Editor(s)