Abstract
Single and multiple wavelength laser systems are presented that employ self-injection locked InGaN/GaN green laser diodes in an external cavity configuration with a partially reflective mirror. A stable and simultaneous locking of up to four longitudinal Fabry-Perot modes of the system cavity is demonstrated with appreciable signal-to-noise-ratio of ∼13 dB and average mode linewidth of ∼150 pm. The multi-wavelength spectrum exhibited a flat-top emission with nearly equal power distribution among the modes and an analogous mode spacing of ∼0.5 nm. This first demonstration of multi-wavelength generation source is highly attractive in a multitude of cross-disciplinary field applications besides asserting the prospects of narrow wavelength spaced multiplexed visible light communication. Moreover, an extended two-stage self-injection locked near single wavelength visible laser system is also presented. An ultra-narrow linewidth of ∼34 pm is realized at 525.05 nm locked wavelength from this innovative system, with ∼20 dB side-mode-suppression-ratio; thus signifying a paradigm shift toward semiconductor lasers for near single lasing wavelength generation, which is presently dominated by other kinds of laser technologies.
Original language | English |
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Article number | 8715477 |
Journal | IEEE Journal of Selected Topics in Quantum Electronics |
Volume | 25 |
Issue number | 6 |
DOIs | |
State | Published - 1 Nov 2019 |
Bibliographical note
Funding Information:Manuscript received January 31, 2019; revised May 1, 2019; accepted May 8, 2019. Date of publication May 15, 2019; date of current version June 4, 2019. This work was supported in part by the King Abdulaziz City for Science and Technology (KACST) under Grants EE2381 and KACST TIC R2-FP-008, in part by King Abdullah University of Science and Technology (KAUST) baseline funding under Grants BAS/1/1614-01-01, KCR/1/2081-01-01, and GEN/1/6607-01-01, and in part by KAUST-KFUPM Special Initiative (KKI) Program (REP/1/2878-01-01). (Corresponding author: Mohammed Zahed Mustafa Khan.) M. H. M. Shamim was with the Optoelectronic Research Laboratory Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. He is now with the Department of Electrical and Computer Engineering, McGill University, Montreal, QC H3A 0G4, Canada (e-mail: [email protected]).
Publisher Copyright:
© 1995-2012 IEEE.
Keywords
- External cavity diode laser
- self-injection locking
- single frequency laser
- visible multi-wavelength laser
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering