Gorelik, V. S.

Kudryavtseva, A. D.

Orlovich, V. A.

Tcherniega, N. V.

Vodchits, A. I.

Voinov, Yu. P.

English

Электронная библиотека БГУ

 39
Lowering Raman threshold in liquids embedded into  
photonic crystals r photonic glasses 
V.S. Gorelik1, A.D. Kudryavtseva1, V.A. Orlovich2,  
N.V. Tcherniega1, A.I. Vodchits2, Yu.P. Voinov1 
1P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; 
2B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 
Belarus, e-mail: gorelik@sci.lebedev.ru 
 
Stimulated Raman scattering in photonic crystals and photonic glasses with 
embedded molecular liquids is studied under excitation by picosecond laser 
pulses. Substantial decrease of Raman threshold was observed when focused 
laser beam excited substance inside of photonic structures. Such phenomenon 
was explained as the result of large enhancement of laser radiation field due to 
Mie resonance or whispering gallery modes effects. Raman threshold reducing in 
photonic crystals and photonic glasses opens the way to creating new efficient 
laser sources based on Stimulated Raman scattering in photonic structures. 
 
Polarization multiwave mixing of Gaussian and  
singular light beams in dye solutions 
D.V. Gorbach, O.G. Romanov, A.L. Tolstik 
Physical Department, Belarusian State University, Minsk, Belarus, 
e-mail: gorbachdv@yandex.ru 
 
Results of the study of polarization dynamic holograms formed under multiwave 
mixing of Gaussian and singular light beams in dye solutions are presented. It 
was shown that for any combination of polarizations of the interacting waves, the 
topological charge, contributed in formed dynamic hologram, is transmitted to 
conjugate wave, and it is equal in absolute to that of the signal wave. The 
dependence of the orientation of the polarization plane of the conjugate wave on 
the relative orientation of the polarization planes of the interacting waves has 
been established. 
 
Spectral dependences of optical absorption  
for vacuum annealed Bi12SiO20 crystals 
M.G. Kisteneva, A.S. Akrestina, E.S. Khudyakova,  
A.N. Grebenchukov, S.M. Shandarov, Yu.F. Kargin 
Department of Electronic Devices, State University of Control System and 
Radioelectronics, Tomsk, Russia, e-mail: m-kisteneva@mail.ru 
 
We have investigated the spectral dependences of the optical absorption of 
Bi12SiO20 crystals, subjected to vacuum annealing in the temperature range from 
650 to 780 °C; and subsequent annealing in the air atmosphere at the 


Lowering Raman threshold in liquids embedded into photonic crystals r photonic glasses

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Lowering Raman threshold in liquids embedded into photonic crystals r photonic glasses

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