Photorefractive CdTe for laser ultrasonics receivers
|Konstantin Shcherbin 2, Volodymyr Danylyuk 2, Zinaida Zakharuk 1, Ilariy M. Rarenko 1, Marvin Klein 3|
1. Chernivtsi National University (ChNU), 2 Kotsubinsky Str., Chernivtsi 58012, Ukraine
Semiconductor crystals lacking the symmetry center exhibit photorefractive effect. One of the most promising application of the photorefractive semiconductors is remote detection of ultrasonic waves with adaptive interferometers. Because of the fast response the photorefractive semiconductors exhibit adaptability to a wide range of mechanical and optical disturbances that are encountered in the factory environment. Cadmium telluride (CdTe) possesses the largest electro-optic constant among all semiconductors. It is thus a promising material for use in laser ultrasonic receivers. An important advantage of CdTe is its sensitivity in the near infrared and at 1.5 μm in particular, where many commercial solid-state lasers and laser diodes are available. The latter wavelength is important because it lies in the "eye-safe" spectral range and because this is telecommunication wavelength range.
Presentation: poster at E-MRS Fall Meeting 2004, Symposium F, by Konstantin Shcherbin
See On-line Journal of E-MRS Fall Meeting 2004
Submitted: 2004-03-24 12:12 Revised: 2009-06-08 12:55