Abstract

Enhanced two-beam mixing amplification at a wavelength of 1.06 μm obtained by using sinusoidal electrical fields at 7.7 MHz is reported. The peak measured gains are comparable with dc field enhanced gain but with smaller rms fields. At grating wavelengths >3 μm the ac enhanced gain is considerably higher than the dc enhanced gain. Uniform alternating electric fields are much easier to establish inside the material and result in a much more stable output than dc fields.

© 1987 Optical Society of America

Influence of alternating field frequency on enhanced photorefractive gain in two-beam coupling

C. Besson, J. M. C. Jonathan, A. Villing, G. Pauliat, and G. Roosen
Opt. Lett. 14(24) 1359-1361 (1989)

Photorefractive two-beam coupling with applied radio-frequency fields: theory and experiment

Jayant Kumar, Giovanni Albanese, and William H. Steier
J. Opt. Soc. Am. B 4(7) 1079-1082 (1987)

Enhancement of the photorefractive gain at 1.3–1.5 μm in CdTe using alternating electric fields

Mehrdad Ziari, William H. Steier, Peter M. Ranon, Marvin B. Klein, and Sudhir Trivedi
J. Opt. Soc. Am. B 9(8) 1461-1466 (1992)

Characterization of photorefractive CdTe:V: high two-wave mixing gain with an optimum low-frequency periodic external electric field

J.-Y. Moisan, N. Wolffer, O. Moine, P. Gravey, G. Martel, A. Aoudia, E. Repka, Y. Marfaing, and R. Triboulet
J. Opt. Soc. Am. B 11(9) 1655-1667 (1994)

Two-wave mixing gain in Bi₁₂SiO₂₀ with applied alternating electric fields: self-diffraction and optical activity effects

Michael A. Krainak and Frederic M. Davidson
J. Opt. Soc. Am. B 6(4) 634-638 (1989)