Self-pumped phase conjugate BaTiO3:Rh ring mirror at 1.06 um: optimization of reflectivity, rise time, and fidelity

Nicolas Huot; Jean-Michel C. Jonathan; Gilles Pauliat; Daniel Rytz; Gerald Roosen

doi:10.1117/12.326849

9 October 1998 Self-pumped phase conjugate BaTiO₃:Rh ring mirror at 1.06 μm: optimization of reflectivity, rise time, and fidelity

Nicolas Huot, Jean-Michel C. Jonathan, Gilles Pauliat, Daniel Rytz, Gerald Roosen

Author Affiliations +

Proceedings Volume 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV; (1998) https://doi.org/10.1117/12.326849
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Photorefractive rhodium doped barium titanate (BaTiO3:Rh) is now well known for its significant response at near infrared wavelengths .We studied and characterized this crystal at 1.06 j.tm. By twowave mixing experiments in a 45°-cut crystal, we measured a maximum photorefractive gain F of 23 cm1 with cw illumination and 16.6 cm1 with nanosecond illumination, together with a low absorption (0. 1 cm1). Using spectroscopic determinations of the photorefractive sites 2 (Rh3, Rh4, Rh5), we showed that the photorefractive properties of BaTiO3 Rh could be well described by a three charge state model .This enabled to determine the internal parameters of the material using experimental characterizations and to accurately predict its performances at 1 .06 tm. Comparative characterizations of several BaTiO3:Rh samples proved that this material is now well reproducible, which is of prime importance for applications. Reproducibility, high photorefractive gain, low absorption and accurate theoretical description make BaTiO3:Rh a good candidate for realization and optimization of non linear functions like optical phase conjugation. The application we are interested in, is the dynamic wavefront correction of nanosecond Nd:YAG master-oscillator power-amplifier (MOPA) laser sources.

Citation Download Citation

Nicolas Huot, Jean-Michel C. Jonathan, Gilles Pauliat, Daniel Rytz, and Gerald Roosen "Self-pumped phase conjugate BaTiO₃:Rh ring mirror at 1.06 μm: optimization of reflectivity, rise time, and fidelity", Proc. SPIE 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV, (9 October 1998); https://doi.org/10.1117/12.326849

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