TY - JOUR
T1 - Parity-time symmetry in coherently coupled vertical cavity laser arrays
AU - Gao, Zihe
AU - Fryslie, Stewart T.M.
AU - Thompson, Bradley J.
AU - Carney, P. Scott
AU - Choquette, Kent D.
N1 - Funding Information:
National Science Foundation (NSF) (ECCS 15-09845).
Publisher Copyright:
© 2017 Optical Society of America.
PY - 2017/3/20
Y1 - 2017/3/20
N2 - We report parity-time (PT) symmetry breaking in electrically injected, coherently coupled, vertical cavity surface emitting laser arrays. We predict beam steering, mode evolution, and mode hopping as consequences of the non-Hermiticity of the array, analyzed by the temporal coupled-mode theory with both an asymmetric gain distribution and local frequency detuning. We present experimental confirmations of the predicted mode evolution, mode hopping, and PT symmetry breaking with quantitative agreement with the theory.
AB - We report parity-time (PT) symmetry breaking in electrically injected, coherently coupled, vertical cavity surface emitting laser arrays. We predict beam steering, mode evolution, and mode hopping as consequences of the non-Hermiticity of the array, analyzed by the temporal coupled-mode theory with both an asymmetric gain distribution and local frequency detuning. We present experimental confirmations of the predicted mode evolution, mode hopping, and PT symmetry breaking with quantitative agreement with the theory.
KW - Diode laser arrays
KW - Optical resonators
KW - Vertical cavity surface emitting lasers
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U2 - 10.1364/OPTICA.4.000323
DO - 10.1364/OPTICA.4.000323
M3 - Article
AN - SCOPUS:85015973998
VL - 4
SP - 323
EP - 329
JO - Optica
JF - Optica
SN - 2334-2536
IS - 3
ER -