Influence of pressure on optical absorption of triglycine selenium single crystals

Katarzyna Ozga; Iwan V. Kityk; Jan Owsik; Janusz Berdowski; Zbigniew Tylczynski; Artur Wojciechowski; Andrzej Ślęzak; Anna Rembielińska

doi:10.1117/12.873095

21 February 2011 Influence of pressure on optical absorption of triglycine selenium single crystals

Katarzyna Ozga, Iwan V. Kityk, Jan Owsik, Janusz Berdowski, Zbigniew Tylczynski, Artur Wojciechowski, Andrzej Ślęzak, Anna Rembielińska

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Proceedings Volume 7933, Physics and Simulation of Optoelectronic Devices XIX; 79331Z (2011) https://doi.org/10.1117/12.873095
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

For the first time we have shown that increasing uniaxial pressure on the triglycine selenium single crystals leads to the occurrence of several spectral maxima below the energy gap. It is principal that after interruption of the applied uniaxial pressure one observes remarkable spectral shifts up to 20 nm of the principal spectral maxima at 280 nm and 340 nm. The effect is caused by the changes of inter-molecular interactions of the van der Waals type in such kinds of crystals and occurrence of in elastic interactions. The effect has irreversible character and after applying of uniaxial pressure several times we see that there occur several strains which may be considered as the remaining infer-molecular stresses. The observed phenomenon may be used for creation of the optoelectronic tensors of the pressure with the forces up to 4 kG. The performed investigations have shown that the spectral broadening is not sensitive to the pressure, however their spectral shifts are substantially sensitive to the applied pressure. The observed effect possess a long time reversibility (up to one month). Additional studies of piezooptical effects have shown its sensitivity to the external cw green laser light at power 300 mW. Using the thermoluminescence we have established that the crystals are very sensitive to the number of trapping levels within the energy gap. Additionally there were performed studies of electrooptical effects for the pulsed 10 ns Nd:YAG laser.

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Katarzyna Ozga, Iwan V. Kityk, Jan Owsik, Janusz Berdowski, Zbigniew Tylczynski, Artur Wojciechowski, Andrzej Ślęzak, and Anna Rembielińska "Influence of pressure on optical absorption of triglycine selenium single crystals", Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 79331Z (21 February 2011); https://doi.org/10.1117/12.873095

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KEYWORDS

Crystals

Absorption

Selenium

Continuous wave operation

Optoelectronics

Physics

Polarization

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