Title :
Dynamic wavefront correction of Nd:YAG lasers by self-pumped phase conjugation in photorefractive BaTiO3:Rh
Author :
Huot, Nicolas ; Jonathan, Jean-Michel C. ; Roosen, Gerald
Author_Institution :
Lab. Charles Fabry, CNRS, Orsay, France
fDate :
12/1/1999 12:00:00 AM
Abstract :
We present an overview of the results we obtained with photorefractive BaTiO3:Rh in which self-pumped phase conjugation is performed to compensate for dynamic aberrations in Q-switched Nd:YAG lasers. Characterization of the material at 1.06 μm with both cw and nanosecond illumination is detailed. Oxidation of the crystals is proposed to decrease the photorefractive rise time at the expense of absorption. Then an optimized compact ring phase conjugate mirror with high reflectivity and fidelity and a short rise time is described. Finally, such a solid-state mirror is introduced into Q-switched Nd:YAG master oscillator-power amplifier laser sources and provides a diffraction limited beam
Keywords :
aberrations; barium compounds; laser mirrors; optical phase conjugation; photorefractive materials; reviews; rhodium; solid lasers; 1.06 mum; BaTiO3:Rh; Nd:YAG lasers; Q-switched Nd:YAG lasers; Q-switched Nd:YAG master oscillator-power amplifier laser sources; YAG:Rh; YAl5O12:Rh; absorption; cw illumination; diffraction limited beam; dynamic aberrations; dynamic wavefront correction; fidelity; high reflectivity; nanosecond illumination; optimized compact ring phase conjugate mirror; oxidation; photorefractive BaTiO3:Rh; photorefractive rise time; self-pumped phase conjugation; short rise time; solid-state mirror; Absorption; Crystalline materials; Crystals; Lighting; Mirrors; Optical materials; Oxidation; Photorefractive effect; Photorefractive materials; Ring lasers;
Journal_Title :
Proceedings of the IEEE
