2 March 2001 Role of resonant refractive-index grating in a nonreciprocal Nd:YAG self-pumped phase conjugator
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Abstract
We have studied both experimentally and numerically the role of resonant refractive index gratings in a self-pumped phase conjugate mirror based on an Nd:YAG amplifier with nonreciprocal feedback loop. In experiment the generation of the phase-conjugating laser was delayed with respect to recording of a holographic nonlinear mirror by an external beam. An increase in the phase-conjugate reflectivity at a delay time of about 3 microseconds was measured. The numerical calculation confirmed the additional contribution of the resonant refractive-index grating, which is formed in the pumped Nd:YAG crystal due to excitation of a higher-lying level of Nd3+ ions, to efficiency of phase conjugation.
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Oleg Leonidovich Antipov, Dmitry Victorovich Chausov, Vladimir V. Yarovoy, "Role of resonant refractive-index grating in a nonreciprocal Nd:YAG self-pumped phase conjugator", Proc. SPIE 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control, (2 March 2001); doi: 10.1117/12.417739; https://doi.org/10.1117/12.417739
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