Temporal-line shift of pulsed GaAs1-xPxinjection laser diodes

The time dependence of the coherent emission wavelength shift of GaAs
1-x
P
x
laser diodes during a flat-topped, 240 ns current pulse (20 ns rise time) was measured and found to agree reasonably well with calculations based on a simple thermal model of the diode which gives a square root of time dependence.