Resonance-free frequency response of a semiconductor laser
We show experimentally and analytically that fast spontaneous recombination lifetime, τ B,
spon, leads to resonance-free frequency response in semiconductor lasers, and as a
consequence higher speed operation. Faster τ B, spon is obtained by a reverse-bias
collector field pinning and tilting a dynamic (removable) charge population in a thin base (τ
t∼ ps), allowing only “fast” recombination. We show resonance-free optical response on a
prototype transistor laser (TL) with τ B, spon∼ 29 ps. Based on the TL, a resonance-free …
spon, leads to resonance-free frequency response in semiconductor lasers, and as a
consequence higher speed operation. Faster τ B, spon is obtained by a reverse-bias
collector field pinning and tilting a dynamic (removable) charge population in a thin base (τ
t∼ ps), allowing only “fast” recombination. We show resonance-free optical response on a
prototype transistor laser (TL) with τ B, spon∼ 29 ps. Based on the TL, a resonance-free …
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