Experimental Investigation on Holographic Intormation Storage in Photorefractive Crystal Cu-Doped KNSBN II. a Study on the Energy Transfer in Two Wave Coupling
Tang Andong, Li Yulin, Kong Yue, Zhao Mingjun. Experimental Investigation on Holographic Intormation Storage in Photorefractive Crystal Cu-Doped KNSBN II. a Study on the Energy Transfer in Two Wave Coupling[J]. Editorial Office of Optics and Precision Engineering, 1993,(1): 87-92
Tang Andong, Li Yulin, Kong Yue, Zhao Mingjun. Experimental Investigation on Holographic Intormation Storage in Photorefractive Crystal Cu-Doped KNSBN II. a Study on the Energy Transfer in Two Wave Coupling[J]. Editorial Office of Optics and Precision Engineering, 1993,(1): 87-92DOI:
Two wave coupling is an important method to investigate the characteristics and qualities of photorefractive crystal.This paper represents our results
measured
based on the principle of energy transfer in two wave coupling which is included in the theory of photorefractive effect
for the relationship between the gain coefficient of two wave coupling F and the crossing angle of the beam 29
and also r as a function of beam ratio p. The results indicate that F of the Cu:KNSBN crystal is big. At last
high frequency temporal modulation characteristics of this crystal bulk and the function of diffraction efficiency as the crossing angle of the beam 29 and the frequency of modulation f are described respectively.