摘要
Experimental observation of optical bistability in a nonlinear two-dimensional volume refractive index grating is reported.The index grating in LiNbO_(3):0.1 wt.%Fe photorefractive single crystal was fabricated by using hologram recording and subsequent thermal fixing techniques.Due to the thermal fixing,the stored 2D volume index grating shows no optical erasure during readout.An explanation of the nonlinear phenomena is also given in terms of the intensity-enhanced bulk photovoltaic effects in LiNbO_(3):Fe material.
基金
Supported by the Grant for the Key Research Project in Climbing Program from the National Commission of Science and Technology of China.
