Abstract
Recent advances in the development of tunable alexandrite laser amplifiers, in single-pass and double-pass configurations, show promising trends toward higher average power and higher brightness applications. As the low emission cross section of alexandrite (≈5-7 × 10−21cm2 @ 25°C and 1 × 10−20 cm2 at 95°C at band center) indicates, alexandrite is a low to moderate gain material. However, under pumping conditions compatible with reasonable flashlamp liftimes (>106 shots), single pass amplification factors of four to seven have been achieved using 0.635 cm diameter by 10 cm long rods operated at a temperature of 95°C.
© 1986 Optical Society of America
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