TY - JOUR
T1 - Analysis of gain-switching characteristics including strong gain saturation effects in low-dimensional semiconductor lasers
AU - Chen, Shaoqiang
AU - Yoshita, Masahiro
AU - Ito, Takashi
AU - Mochizuki, Toshimitsu
AU - Akiyama, Hidefumi
AU - Yokoyama, Hiroyuki
AU - Kamide, Kenji
AU - Ogawa, Tetsuo
PY - 2012/9
Y1 - 2012/9
N2 - The effects of gain nonlinearities on gain-switched short-pulse-generation characteristics are analyzed via rate equations assuming a nonlineargain model including a gain saturation parameter gs to quantitatively describe the strong gain-saturation nonlinearity in low-dimensional semiconductor lasers at high carrier densities. It was found that the minimum pulse width and the delay time are mainly determined by g s rather than a differential gain coefficient g 0 and a gain compression factor ε. By tracing the temporal evolution of carrier density, photon density, and material gain during gain switching, distinctly different effects of g s, ε, and cavity lifetime τ p on pulse generation were clarified.
AB - The effects of gain nonlinearities on gain-switched short-pulse-generation characteristics are analyzed via rate equations assuming a nonlineargain model including a gain saturation parameter gs to quantitatively describe the strong gain-saturation nonlinearity in low-dimensional semiconductor lasers at high carrier densities. It was found that the minimum pulse width and the delay time are mainly determined by g s rather than a differential gain coefficient g 0 and a gain compression factor ε. By tracing the temporal evolution of carrier density, photon density, and material gain during gain switching, distinctly different effects of g s, ε, and cavity lifetime τ p on pulse generation were clarified.
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U2 - 10.1143/JJAP.51.098001
DO - 10.1143/JJAP.51.098001
M3 - Article
AN - SCOPUS:84865845575
VL - 51
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 9
M1 - 098001
ER -