Tunable Dual-Wavelength Self-injection Locked InGaN/GaN Green Laser Diode
AuthorsShamim, Md. Hosne Mobarok
Ng, Tien Khee
Ooi, Boon S.
Khan, Mohammed Zahed Mustafa
KAUST DepartmentElectrical Engineering Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/656835
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AbstractWe implemented a tunable dual-longitudinal-mode spacing InGaN/GaN green (521–528 nm) laser diode by employing a self-injection locking scheme that is based on an external cavity configuration and utilizing either a high-or partial-reflecting mirror. A tunable longitudinal-mode spacing of 0.20 – 5.96 nm was accomplished, corresponding to a calculated frequency difference of 0.22–6.51 THz, as a result. The influence of operating current and temperature on the system performance was also investigated with a measured maximum side-mode-suppression ratio of 30.4 dB and minimum dual-mode peak optical power ratio of 0.03 dB. To shed light on the operation of the dual-wavelength device arising from the tunable longitudinal-mode spacing mechanism, the underlying physics is qualitatively described. To the best of our knowledge, this tunable longitudinal-mode-spacing dual-wavelength device is novel, and has potential applications as an alternative means in millimeter wave and THz generation, thus possibly addressing the terahertz technology gap. The dual-wavelength operation is also attractive for high-resolution imaging and broadband wireless communication.
CitationShamim, M. H. M., Alkhazragi, O., Ng, T. K., Ooi, B. S., & Khan, M. Z. M. (2019). Tunable Dual-Wavelength Self-injection Locked InGaN/GaN Green Laser Diode. IEEE Access, 1–1. doi:10.1109/access.2019.2944693
SponsorsAuthors acknowledge the support from King Fahd University of Petroleum & Minerals (KFUPM); King Abdulaziz City for Science and Technology (KACST), (grant nos. EE2381 and KACST TIC R2-FP-008); Partial support from King Abdullah University of Science and Technology (KAUST) baseline funding (grant nos. BAS/1/1614-01-01, KCR/1/2081-01-01, and GEN/1/6607-01-01); and KAUST-KFUPM Special Initiative (KKI) Program (REP/1/2878-01-01).
M. Hosne M. Shamim gratefully acknowledges Dr. Khaled Shakfa from Photonics Laboratory, KAUST, for the beneficial discussion.
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