Vn. Rai et al., GENERATION OF PICOSECOND OPTICAL PULSES FROM SINGLE HETEROSTRUCTURE GAAS DIODE-LASER AND THEIR EMISSION CHARACTERISTICS, Pramana, 45(5), 1995, pp. 439-451
Emission characteristics of a single heterostructure GaAs diode laser
are reported using a simple driver circuit. It provides a single picos
econd time duration optical pulse, a pulse train or a broad optical pu
lse depending on the amplitude and time duration of the electrical pum
p pulse. Results show that relaxation oscillation frequency depends on
the amplitude of pumping current pulse as well as on some inherent pr
operty of diode laser, which seems to be the level of impurity in lasi
ng medium. Variation of relaxation oscillation frequency with amplitud
e of current pulse shows only the qualitative agreement with the repor
ted theoretical predictions.