Lasers

Energy optimisation of an Nd:YAG-based four-wave-mixing oscillator with feedback and investigation of its adaptive properties in the pulse-periodic regime

K. V. Ergakov, V. V. Yarovoi

Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod

Abstract: Theoretical and experimental optimisation was made of the parameters of an Nd:YAG oscillator based on four-wave mixing (FWMF) with feedback. Use was made of a thermal-nonlinearity hologram and the energy efficiency under conditions of generation of giant pulses was determined. The efficiency reached was 60% when the energy pulse was 200 mJ for a 2-mm input beam of 50 mJ energy. The ability of the system to operate in the pulse-periodic (up to 25 Hz) conditions was demonstrated.

PACS: 42.65.Hw, 42.25.Hz, 42.55.Xi

Received: 01.01.1996

 English version: Quantum Electronics, 1996, 26:5, 389–394

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