Open AccessSimultaneous self-injection locking of two VCSELs to a single whispering-gallery-mode microcavity
Author(s) -
Li Jiang,
Leilei Shi,
Jing Luo,
Qirui Gao,
Miaoxin Bai,
Tianyi Lan,
Iroegbu Paul Ikechukwu,
Laiyang Dang,
Ligang Huang,
Tao Zhu
Publication year - 2021
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.441595
Subject(s) - whispering gallery wave , optics , vertical cavity surface emitting laser , laser , optoelectronics , materials science , wavelength , offset (computer science) , semiconductor laser theory , optical microcavity , physics , computer science , programming language
Simultaneous self-injection locking of two vertical-cavity surface-emitting lasers (VCSELs) to a single whispering-gallery-mode (WGM) microcavity is experimentally demonstrated. The linewidths of the two VCSELs are compressed from 3.5 MHz and 5 MHz to 20.9 kHz and 24.1 kHz, which is on the same order of magnitude as that of locking each VCSEL to the microcavity separately. Moreover, the frequency noises of the two simultaneously locked VCSELs are suppressed by more than 60 dB below the offset frequency of 100 kHz compared to that of the free-running VCSELs. The method demonstrated here might be used in the multi-wavelength laser array with low phase and frequency noises, especially the VCSELs with the unique architecture of a two-dimensional array.