Abstract
Summary form only given. Pulsed electrical injection of a
semiconductor laser typically results in better performance compared
with continuous wave operation. Pulsed lasers tend to have lower
threshold current, higher quantum efficiency, more stable performance
over varying ambient temperature, and the ability to operate at longer
wavelengths. This dramatic difference in performance underscores the
importance of heat generation and transport in semiconductor lasers. We
develop here a new heat model for a semiconductor device that takes into
account more rigorously the thermoelectric properties of the constituent
layers. We apply the concept of heterostructure integrated cooling to a
SCH quantum well laser. Peltier cooling can be optimized in a device by
engineering the band offsets in such a way that current both into and
out of the active region removes heat from the lattice. We call this
device an ICICLE (injection current internally cooled light emitter)
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