Crystal Research and Technology
Cryst. Res. Technol. 40, 259 (2005) - Abstract -

Acoustically induced optical second harmonic generation in InAs crystals

M. Makowska-Janusik, A. Hruban*, J. Ebothe**, and I. V. Kityk

Institute of Physics, J. Dlugosz Academy of Częstochowa, al. Armii Krajowej 13/15, Częstochowa, Poland
*Institute of Electronic Matrials Technology, ul.Wolczanska 133, Warsaw, Poland
**Universite de Reims, UFR Sciences, Unite de Thermique et d'Analyse, Physique-LMET UPRES EA N2061, Reims, France

Keywords InAs, second harmonic
PACS 42.70.Mp
DOI 10.1002/crat.200410335

Acoustically induced optical second harmonic generation (AIOSHG) in InAs single crystals was investigated. With increasing acoustical power, the AIOSHG for fundamental CO laser light (λ=7.1µm) increases and achieves its maximum value at acoustical power density about 1.70 W/cm2. The value of the AIOSHG for InAs was substantially higher than for key inorganic photo-refractive and ferroelectrics materials. With decreasing temperature, the AIOSHG signal strongly increases below 42 K. The AIOSHG maxima were observed at acoustical frequencies ranged at 7-11 kHz. Comparing the obtained results with the acoustically induced IR spectra at low temperature, one can conclude that the observed effect is associated with acoustically-induced phase transformations.




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