Modulation Instability in Biased Photorefractive-Photovoltaic Crystals
LU Ke-Qing1, ZHAO Wei1, YANG Yan-Long1, SUN Chuan-Dong1, GAO Hong-Wen1, LI Jin-Ping1, ZHANG Yan-Peng2
1State Key Laboratory of Transient Optics Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi’an 710068
2Department of Electronic Science and Technology, Xi’an Jiaotong University, Xi’an 710049
Modulation Instability in Biased Photorefractive-Photovoltaic Crystals
LU Ke-Qing1;ZHAO Wei1;YANG Yan-Long1;SUN Chuan-Dong1;GAO Hong-Wen1;LI Jin-Ping1;ZHANG Yan-Peng2
1State Key Laboratory of Transient Optics Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi’an 710068
2Department of Electronic Science and Technology, Xi’an Jiaotong University, Xi’an 710049
Abstract： We show the modulation instability of broad optical beams in biased photorefractive-photovoltaic crystals under steady-state conditions. This modulation instability growth rate depends on the external bias field, the bulk photovoltaic effect, and the ratio of the optical beam intensity to that of the dark irradiance. Under appropriate conditions, this modulation instability growth rate is the modulation instability growth rate studied previously in biased photorefractive-nonphotovoltaic crystals, and the modulation instability growth rate in open- and closed-circuit photorefractive-photovoltaic crystals can be predicted.
2004, Vol. 21 
