In this paper, we present detailed measurements of the temperature- dependent relaxation oscillation frequency and polarization resolved linewidth enhancement factor (α) of a 1550-nm vertical cavity surface emitting laser (VCSEL). The thermal effects on these parameters are investigated for a temperature range of -20 °C to 60 °C.. Comparison is made between the experimental observations and theoretical predictions for similar VCSELs and with those different in operating wavelength and/or materials.
- linewidth enhancement factor
- relaxation oscillation frequency (ROF)
- semiconductor lasers
- vertical-cavity surface-emitting lasers (VCSELs)