Author(s): Guo, J (Guo, Jing); Li, H (Li, Huan); Xiong, XK (Xiong, Xinkai); Zhou, DB (Zhou, Daibing); Zhao, LJ (Zhao, Lingjuan); Liang, S (Liang, Song)

Source: OPTICS LETTERS Volume: 49 Issue: 2  Pages: 286-289  DOI: 10.1364/OL.513993  Published: JAN 15 2024 

Abstract: A single-mode InGaAsP/InP buried heterostructure (BH) laser based on high-order slotted surface gratings has been fabricated. The introduction of surface slotted grating can simplify the fabrication process of single-mode BH lasers notably. The laser shows a good single-mode emission performance, with larger than 30 dB side-mode suppression ratio (SMSR) when the current is between 200 and 400 mA. Calculations show that the gain coupling mechanism plays a key role for the slot grating to select the emission wavelength. The linewidth of the laser is measured. The fitted Gaussian and Lorentzian linewidths are 1500 and 550 kHz, respectively. (c) 2024 Optica Publishing Group

Accession Number: WOS:001165112500003

PubMed ID: 38194549

ISSN: 0146-9592

eISSN: 1539-4794