We investigate the backscattering for converging beams in iron-doped lithium niobate crystals. Due to the nonlinear properties of the crystal, backscattering exhibits temporally fluctuating speckles that make a transi...We investigate the backscattering for converging beams in iron-doped lithium niobate crystals. Due to the nonlinear properties of the crystal, backscattering exhibits temporally fluctuating speckles that make a transition to the phase conjugate of the incident beam under certain circumstances. Our observation seems to point to a new kind of self-pumped phase conjugation in photorefractive media.展开更多
基金Supported by the Excellent Young Teachers Programme of the Ministry of Education of China under Grant No 2002-350, the National Natural Science Foundation of China under Grant No 60208003, the Key Scientific and Technical Innovation Project of the Ministry of Education of China （704012）, the Programme for Changjiang Scholars and Innovative Research Team in University and the Start-up Research Foundation of Nankai University （J02020）.
文摘We investigate the backscattering for converging beams in iron-doped lithium niobate crystals. Due to the nonlinear properties of the crystal, backscattering exhibits temporally fluctuating speckles that make a transition to the phase conjugate of the incident beam under certain circumstances. Our observation seems to point to a new kind of self-pumped phase conjugation in photorefractive media.
