Spectroscopic simulation of tapered laser diodes

In this work, we have presented a description of our spectral laser model and performed spectroscopic simulations of a 975 nm tapered laser diode. To verify the ASE model, we checked the extracted gain using the variable stripe length method. A good agreement between the simulated and measured emission linewidth could be obtained using a spontaneous emission coupling factor of 1×10−16. The simulated red-shift in the peak emission wavelength with increasing bias is consistent with experiment and is attributed to self-heating effects.