https://doi.org/10.15407/spqeo4.04.331
Semiconductor Physics, Quantum Electronics & Optoelectronics. 2001. V. 4, N 4. P. 331-336.
PACS: 42.70.M; N
Microwave-induced optical non-linearity of amino acid crystals
L.I. Berezhinsky 1, G.I. Dovbeshko 2, V.V. Obukhovsky 3
1 - Institute of Semiconductor Physics, NAS of Ukraine, Prospect Nauki,41, Kiev-03028,
Phone: (044) 265-73-64; E-mail: berezhinsky@isp.kiev.ua
2 - Institute of Physics, NAS of Ukraine, Prospect Nauki,46,Kiev-03028;
3 - Taras Shevchenko Kiev National University, Prospect Glushkova,6, Kiev, Phone: (044) 266-05-40.
Abstract. Changes (DR) of amino acid crystals infrared (IR) reflectance (R) induced by simultaneous irradiation of IR and microwaves (MW) or extremely high frequency (EHF) radiation have been observed. It was shown that under the microwave action, components of dielectric permeability tensor, eij, which is responsible for the alteration of the R, are changed. Square dependence of DR/R on power of EHF radiation has been observed. An attempt for explanation of the observed effect as non-linear phenomenon with participation of two EHF photons (Wm) and one IR photon (wi) was made. The estimation shows that the third order non-linear polarizability coefficient, c(3)(Wm,-Wm,wi), reaches the gigantic value - 10 сm/erg for a-Gly single crystal.
Keywords: gigantic non-linearity, amino acid crystal, infra-red reflectance, microwaves, extremely high frequency radiation, polarization indicatrix.
Paper received 30.11.00; revised manuscript received 26.11.01; accepted for publication 12.12.01.
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