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Optical pulses; emission characteristics; oscillation frequency

Emission characteristics of a single heterostructure GaAs diode laser are reported using a simple driver circuit. It provides a single picosecond time duration optical pulse, a pulse train or a broad optical pulse depending on the amplitude and time duration of the electrical pump pulse. Results show that relaxation oscillation frequency depends on the amplitude of pumping current pulse as well as on some inherent property of diode laser, which seems to be the level of impurity in lasing medium. Variation of relaxation oscillation frequency with amplitude of current pulse shows only the qualitative agreement with the reported theoretical predictions.

V N Rai¹ M Shukla¹ H C Pant¹

1. Laser Plasma Group, Centre for Advanced Technology, Indore - 452 013, India

Published

November 1995

Manuscript received

12 June 1995

Manuscript revised

6 October 1995