Exceptional points in anti-PT symmetric system of delay coupled semiconductor lasers

2021 ◽  
Author(s):  
Gautam Vemuri ◽  
Andrew Wilkey ◽  
Yogesh N. Joglekar
Keyword(s):  
Semiconductor Lasers ◽  
Symmetric System ◽  
Exceptional Points ◽  
Coupled Semiconductor

scholarly journals Parity–Time Symmetry in Bidirectionally Coupled Semiconductor Lasers

Photonics ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 122 ◽  
Author(s):  
Andrew Wilkey ◽  
Joseph Suelzer ◽  
Yogesh Joglekar ◽  
Gautam Vemuri
Keyword(s):  
Semiconductor Lasers ◽  
Electric Fields ◽  
Single Mode ◽  
Equation Model ◽  
Rate Equations ◽  
Symmetric System ◽  
Time Symmetry ◽  
Complicating Factors ◽  
Future Work ◽  
Coupled Semiconductor

We report on the numerical analysis of intensity dynamics of a pair of mutually coupled, single-mode semiconductor lasers that are operated in a configuration that leads to features reminiscent of parity–time symmetry. Starting from the rate equations for the intracavity electric fields of the two lasers and the rate equations for carrier inversions, we show how these equations reduce to a simple 2 × 2 effective Hamiltonian that is identical to that of a typical parity–time (PT)-symmetric dimer. After establishing that a pair of coupled semiconductor lasers could be PT-symmetric, we solve the full set of rate equations and show that despite complicating factors like gain saturation and nonlinearities, the rate equation model predicts intensity dynamics that are akin to those in a PT-symmetric system. The article describes some of the advantages of using semiconductor lasers to realize a PT-symmetric system and concludes with some possible directions for future work on this system.

Independently synchronizable groups in networks of delay-coupled semiconductor lasers

2021 ◽  
pp. 1-1
Author(s):  
Liyue Zhang ◽  
Wei Pan ◽  
Lianshan Yan ◽  
Bin Luo ◽  
Xihua Zou ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Coupled Semiconductor

scholarly journals Exceptional points enhance sum sideband generation in a mechanical PT-symmetric system

2021 ◽  
Vol 29 (4) ◽  
pp. 4875
Author(s):  
Xiao-Hu Lu ◽  
Liu-Gang Si ◽  
Xiao-Yun Wang ◽  
Ying Wu
Keyword(s):  
Symmetric System ◽  
Exceptional Points ◽  
Sideband Generation

scholarly journals Phase-locking of arrays of weakly coupled semiconductor lasers

2018 ◽  
Vol 26 (16) ◽  
pp. 20040 ◽  
Author(s):  
Niketh Nair ◽  
Erik Bochove ◽  
Yehuda Braiman
Keyword(s):  
Semiconductor Lasers ◽  
Phase Locking ◽  
Weakly Coupled ◽  
Coupled Semiconductor

Chaos Synchronization and Communication in Mesh Network Based on Mutually Coupled Semiconductor Lasers

2013 ◽  
Vol 40 (12) ◽  
pp. 1202005
Author(s):  
潘兴茂 Pan Xingmao ◽  
吴正茂 Wu Zhengmao ◽  
唐曦 Tang Xi ◽  
夏光琼 Xia Guangqiong
Keyword(s):  
Semiconductor Lasers ◽  
Chaos Synchronization ◽  
Mesh Network ◽  
Coupled Semiconductor
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