Prism-based tunable InGaN/GaN self-injection locked blue laser diode system: study of temperature, injection ratio, and stability

Mohammed Zahed Mustafa Khan, Sani Mukhtar, Jorge Alberto Holguin Lerma, Omar Alkhazragi, Islam Ashry, Tien Khee Ng, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A quasicontinuously wavelength tuned self-injection locked blue laser diode system employing a prism is presented. A rigorous analysis of the injection ratio (IR) in the form of three systems, namely high (HRS, ∼ − 0.7 dB IR), medium (MRS, ∼ − 1.5 dB IR), and low (LRS, ∼ − 3.0 dB IR) reflection systems, showed a direct relationship with the wavelength tunability whereas the usable system power exhibited an inverse correlation. In particular, MRS configuration demonstrated a concurrent optimization of tuning window and system power, thus emerging as a highly attractive candidate for practical realization. Moreover, a comprehensive investigation on two distinct MRS configurations employing different commercially available InGaN/GaN blue lasers, i.e., MRS-1 and MRS-2, displayed a wavelength tunability (system power) of ∼8.2 nm (∼7.6 mW) and ∼6.3 nm (∼11.6 mW), respectively, at a low injection current of 130 mA. In addition, both MRS configurations maintained high-performance characteristic with corresponding average optical linewidths of ∼80 and ∼58 pm and a side-mode-suppression-ratio of ≥12 dB. Lastly, a thorough stability analysis of HRS and MRS configurations, which are more prone to system instabilities due to elevated IRs, is performed at critical operation conditions of a high injection current of ≥260 mA and a temperature of 40°C, showing an extended stable performance of over 120 min, thus further substantiating the promising features of the prism-based systems for practical applications.
Original languageEnglish (US)
Pages (from-to)1
JournalJournal of Nanophotonics
Issue number03
StatePublished - Jul 2 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): BAS/1/1614-01-01, REP/1/2878-01-01
Acknowledgements: The authors (SM and MZMK) would like to thank King Fahd University of Petroleum and Minerals for supporting this research and acknowledge support from King Abdulaziz City for Science and Technology (KACST), Technology Innovation Center (TIC) for Solid-State Lighting sub-awarded grant EE002381 and the main grant KACST TIC R2-FP-08. The authors (JAH, OA, IA, TKN, and BSO) acknowledge support from King Abdullah University of Science and Technology (KAUST) through baseline funding BAS/1/1614-01-01 and KAUST-KFUPM Special Initiative program (REP/1/2878-01-01).


Dive into the research topics of 'Prism-based tunable InGaN/GaN self-injection locked blue laser diode system: study of temperature, injection ratio, and stability'. Together they form a unique fingerprint.

Cite this