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Numerical calculations of two-beam energy coupling gains in photorefractive BaTiO3 crystal

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1 Author(s)
Lee, Yeon H. ; Dept. of Electr. Eng.-Elecrophys., Univ. of Southern California, Los Angeles, CA, USA

Steady-state two-beam energy coupling gains are numerically obtained in photorefractive BaTiO3 crystal. The energy coupling gains are calculated by changing the angle subtended by two incident beams and by rotating the crystal relative to the grating wave vector. Polarizations of the two incident beams are assumed to be (ordinary, ordinary), (extraordinary, extraordinary), (ordinary, extraordinary), or (extraordinary, ordinary). The wavelength of the beams is assumed to be 515 nm. The maximum coupling gain is found to be 4.8/cm when both beams are ordinary and 74.7/cm when the beams are extraordinary. It is also shown that energy can transfer between ordinary (extraordinary) and extraordinary (ordinary) beams. In this case the maximum energy coupling gain is found to be 9.2/cm

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 11 )