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Q-switching; pulse amplification; gain saturation; high power laser

The paper discusses the performance characteristics of a Nd: glass laser system designed for laser produced plasma studies. It consists of aQ-switched oscillator followed by two amplifier stages. The output behaviour of the oscillator, i.e. laser pulse duration, peak power and optimum coupling, has been studied and is in good agreement with theory. Gain characteristics of amplifiers were obtained as a function of various parameters. Energies in excess of 7 J with pulse durations as small as 18 nsec were obtained giving rise to 400 MW peak power.

R Bhatnagar¹ P D Gupta¹ B S Narayan¹ M Anwar¹ B L Gupta¹ D D Bhawalkar¹

1. Laser Section, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085

Published

March 1979

Manuscript received

20 July 1978

Manuscript revised

6 January 1979