Author(s): Wang, LC (Wang, Lichang); Wang, YF (Wang, Yufei); Dong, FX (Dong, Fengxin); Fu, T (Fu, Ting); Li, MN (Li, Mengna); Zhang, K (Zhang, Kang); Gong, K (Gong, Kai); Zhou, XY (Zhou, Xuyan); Zhang, JX (Zhang, Jianxin)

Source: OPTICS LETTERS  Volume: 49  Issue: 11  Pages: 3078-3081  DOI: 10.1364/OL.523144  Published Date: 2024 JUN 1  

Abstract: Diode lasers with high beam quality and high power have many promising applications. However, high beam quality is always in conflict with high power. In this Letter, we theoretically and experimentally confirm the mode instability property of supersymmetric structures at higher operating currents. Meanwhile, we propose a loss -tailoring diode laser based on a supersymmetric structure, which enables the higher -order lateral modes to obtain higher losses, raises the excitation threshold of the higher -order lateral modes, and achieves a stable fundamental -lateral -mode output at higher current operation. The device obtained a quasisingle -lobe lateral far -field distribution with the full width at half maximum (FWHM) of 7.58 degrees at 350 mA under room temperature, which is a 65% reduction compared to the traditional Fabry-Perot (FP) diode lasers. Moreover, the M 2 of 2.181@350 mA has an improvement of about 37% over traditional FP and supersymmetric structure lasers. (c) 2024 Optica Publishing Group

Accession Number: WOS:001254197500004

PubMed ID: 38824332

ISSN: 0146-9592

eISSN: 1539-4794