Abstract

Four pulsed dye oscillators are coherently combined into a single phase conjugate resonator through the self-pumped conjugation process in a single crystal of BaTiO₃. We have measured the locking range and energy scaling behavior of the system. The locking range is of the order of hundreds of wavelengths. Our best results are close to the theoretical limit and show that one can obtain output energy approximately proportional to N, the number of dye gain cells. Since the N output beams are locked in phase, this implies that the peak far-field intensity would scale as N². We also report two properties of the photorefractive phase conjugate mirror that are relevant to such a system: the fluence required for start-up (9 J/cm²) and the field of view (0.1 sr).

© 1988 Optical Society of America

Rhodium-doped barium titanate phase-conjugate mirror for an all-solid-state, high-repetition-rate, diode-pumped Nd:YAG master-oscillator power amplifier laser

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