Open AccessPhase-locking of arrays of weakly coupled semiconductor lasers
Author(s) -
Niketh Nair,
Erik J. Bochove,
Yehuda Braiman
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.020040
Subject(s) - semiconductor laser theory , laser , optics , diode , coupling (piping) , optoelectronics , phase (matter) , synchronization (alternating current) , physics , semiconductor , noise (video) , phase noise , materials science , computer science , telecommunications , channel (broadcasting) , quantum mechanics , artificial intelligence , metallurgy , image (mathematics)
In this paper we study the conditions for achieving almost perfect phase locking in large arrays of semiconductor diodes. We show that decayed non-local coupling of diode lasers can provide the necessary conditions for robust phase synchronization of an entire diode laser array. Perfect global coupling is known to allow for robust synchronization, however it is often physically impossible or impractical to achieve. We show that when diodes are coupled via the decayed non-local coupling layout, the dominant transverse mode of the laser array has a uniform phase across the lasers and can be stable. This state is robust to noise and frequency disorder and can be realized under periodic (fixed-intensity limit cycle) continuous-wave and chaotic behavior of lasers.