Ultra-narrow linewidth vertical-cavity surface-emitting laser based on external-cavity weak distributed feedback | Zendy

Lidan Jiang | Zendy; Tianyi Lan | Zendy; Laiyang Dang | Zendy; Jiali Li | Zendy; Ligang Huang | Zendy; Leilei Shi | Zendy; Guolu Yin | Zendy; Tao Zhu | Zendy

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Ultra-narrow linewidth vertical-cavity surface-emitting laser based on external-cavity weak distributed feedback

Author(s) -

Lidan Jiang,

Tianyi Lan,

Laiyang Dang,

Jiali Li,

Ligang Huang,

Leilei Shi,

Guolu Yin,

Tao Zhu

Publication year - 2022

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.472383

Subject(s) - laser linewidth , vertical cavity surface emitting laser , materials science , optics , laser , longitudinal mode , optoelectronics , rayleigh scattering , wavelength , physics

We demonstrate an ultra-narrow linewidth vertical-cavity surface-emitting laser (VCSEL) based on external-cavity weak distributed feedback from Rayleigh backscattering (RBS). A single longitudinal mode VCSEL with the linewidth as narrow as 435 Hz and a contrast of 55 dB are experimentally achieved by RBS fiber with a feedback level of RBS signal of -27.6 dB. By adjusting the thermal resistance of the VCSEL from 4.5 kΩ to 7.0 kΩ, the laser wavelength can be tuned from 1543.324 nm to 1542.06 nm with a linear tuning slope of -0.506 nm/kΩ. In the tuning process, the linewidth fluctuates in the range of 553-419 Hz.

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