Zp. Jiang et al., NUMERICAL-SIMULATION OF HIGH-POWER FILAMENT-FREE OPERATION FROM DOUBLE TAPERED SEMICONDUCTOR-LASER DIODES, International journal of optoelectronics, 10(5), 1995, pp. 373-381
The dynamical behaviour of a double tapered semiconductor laser diode
has been studied numerically using a modified beam-propagation method.
By examining the near and far-field mode evolution during gain-switch
ed operation, we find that the optical power threshold for filament fo
rmation in a double tapered device is significantly higher compared wi
th standard broad area stripe devices. Optimization for filament-fi ee
high power operation from double-tapered devices has also been carrie
d out.