Numerical study of converting beat-note signals of dual-frequency lasers to optical frequency combs by optical injection locking of semiconductor lasers
Chenhao Liu(刘晨浩), Haoshu Jin(靳昊澍), Hui Liu(刘辉)†, and Jintao Bai(白晋涛)
Institute of Photonics&Photon-technology, Northwest University, Xi'an 710069, China
Abstract The optical injection locking of semiconductor lasers to dual-frequency lasers is studied by numerical simulations. The beat-note signals can be effectively transformed to optical frequency combs due to the effective four wave-mixing in the active semiconductor gain medium. The low-noise Gaussian-like pulse can be obtained by locking the relaxation oscillation and compensating the gain asymmetry. The simulations suggest that pulse trains of width below 30 ps and repetition rate in GHz frequency can be generated simply by the optical injection locking of semiconductor lasers. Since the optical injection locking can broaden the spectrum and amplify the optical power simultaneously, it can be a good initial stage for generating optical frequency combs from dual-frequency lasers by multi-stage of spectral broadening in nonlinear waveguides.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 62005215).
Corresponding Authors:
Hui Liu
E-mail: liuhui_gzs@nwu.edu.cn
Cite this article:
Chenhao Liu(刘晨浩), Haoshu Jin(靳昊澍), Hui Liu(刘辉), and Jintao Bai(白晋涛) Numerical study of converting beat-note signals of dual-frequency lasers to optical frequency combs by optical injection locking of semiconductor lasers 2022 Chin. Phys. B 31 084205
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