Laser induced phenomena in .gamma.-glycine crystals

• Autorzy: Wojciechowski A. , Alzayed N. , Kityk I. , Berdowski J. , Tylczyński Z.
• Języki publikacji: EN

Abstrakty

EN

The photoinduced changes of absorption within the spectral range 200-800 nm and optical second harmonic generation caused by illumination by the cw second harmonic generation of the Nd:YAG laser (? = 532 nm) and power about 400 mW were investigated. We have established that increasing the time of illumination by the second harmonic generation of the Nd:YAG laser leads to the occurrence of one strong spectral minimum at 319 nm and another less strong at 420 nm. Increasing the time of illumination leads to a slight red spectral shift of the photoinduced minima. The absence of a substantial increase in temperature indicates that the principal role is played here by the photooccupation of the trapping levels. The effect is observed in a wide spectral range of the incident photoinduced angles, however, the beam should possess a good Gaussian-like form and to be space homogenous. The results were reproduced with precision up to 3-4% which was achieved due to additional stabilization of the photoinduced laser power by double control of the power.

Słowa kluczowe

EN

optical absorption; organic crystals

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2010
• Tom: Vol. 40, nr 4
• Strony: 1007--1012
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Wojciechowski A.

autor

Alzayed N.

autor

Kityk I.

autor

Berdowski J.

autor

Tylczyński Z.

• Electrical Engineering Department, Częstochowa University of Technology, Armii Krajowej 17, 42-200 Częstochowa, Poland

Bibliografia

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