Laser-Induced Acoustic Phonon Gratings In Semiconductor Thin-Films
Title - Alternative
J. Appl. Phys.
Ultrasonic-Waves; Excited-State; Oscillations; Diffraction; Generation; Solids; Gaas; Physics, Applied
Laser induced ultrasonic standing waves are observed in molecular beam deposited ZnSe thin films using the transient grating technique. This observation is attributed to a very short trapping time for single photon absorption in the band tail. The period of the standing wave is used to determine the acoustic phonon velocity in the ZnSe thin film which indicates that it is longitudinal acoustic phonons which are excited.
Journal of Applied Physics
Wang, J.; Hutchings, D. C.; Miller, A.; Vanstryland, E. W.; Welford, K. R.; Muirhead, I. T.; and Lewis, K. L., "Laser-Induced Acoustic Phonon Gratings In Semiconductor Thin-Films" (1993). Faculty Bibliography. 1600.