Laser pumping: further increasing injection above threshold?

  • #1
Xiu Liu
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Above the threshold, the stimulation emission becomes dominant for lasing. If increasing the pumping, what will be the change of spontaneous emission and its contribution to the output power and FWHM of the signal, based on the threshold carrier density clamping and the threshold gain clamping, leading to the non-linear effect?

My question arises from the handout of Semiconductor Optoelectronics (Farhan Rana, Cornell University ) at section 11.5 and I am quite curious about the situation if further increasing the injection.

https://courses.cit.cornell.edu/ece533/Lectures/handout11.pdf

Many thanks
 

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