TY - JOUR
T1 - Optimization of Combined Coherent Gain-Switch Pulsing in a Large Array of Semiconductor Lasers
AU - Spitz, Olivier
AU - Maldonado-Castillo, Luis E.
AU - Berrill, Mark A.
AU - Braiman, Yehuda
N1 - Publisher Copyright:
© 1995-2012 IEEE.
PY - 2024
Y1 - 2024
N2 - We combine gain switching and external optical feedback to achieve high-power coherent pulsing in a large array of semiconductor lasers. The simulations are performed in the framework of the Lang-Kobayashi model with modulation of the electrical bias. Long-range coupling in the network of emitters and precise tuning of the modulation frequency are key parameters to obtain both phase-locking between the emitters, and reproducible, periodic, high intensity bursts, i.e. robust, coherent pulsing. The configuration we present here relies on non-filtered conventional optical feedback and allows achieving phase-locked pulsing across the array, including at modulation frequencies that are resonant and not resonant with the external cavity frequency and its harmonics. This work impacts on the realization of phase-synchronized pulsed sources from semiconductor laser arrays and provides insight for the generation of complex nonlinear dynamics in large networks of oscillators.
AB - We combine gain switching and external optical feedback to achieve high-power coherent pulsing in a large array of semiconductor lasers. The simulations are performed in the framework of the Lang-Kobayashi model with modulation of the electrical bias. Long-range coupling in the network of emitters and precise tuning of the modulation frequency are key parameters to obtain both phase-locking between the emitters, and reproducible, periodic, high intensity bursts, i.e. robust, coherent pulsing. The configuration we present here relies on non-filtered conventional optical feedback and allows achieving phase-locked pulsing across the array, including at modulation frequencies that are resonant and not resonant with the external cavity frequency and its harmonics. This work impacts on the realization of phase-synchronized pulsed sources from semiconductor laser arrays and provides insight for the generation of complex nonlinear dynamics in large networks of oscillators.
KW - coherent beam combining
KW - external optical feedback
KW - laser gain-switching
KW - periodic pulsing
KW - Semiconductor laser array
UR - http://www.scopus.com/inward/record.url?scp=85204198627&partnerID=8YFLogxK
U2 - 10.1109/JSTQE.2024.3460738
DO - 10.1109/JSTQE.2024.3460738
M3 - Article
AN - SCOPUS:85204198627
SN - 1077-260X
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
ER -