Wide Tunable Spectrum and High Power Narrowed Linewidth Dual-Wavelength Broad Area Diode Laser
Year: 2025
Type: article
Abstract: We demonstrate a dual-wavelength broad-area diode laser system with narrow linewidth and wide spectral tunability using a composite external cavity comprising a volume Bragg grating and a Littrow-type transmission grating. One wavelength is stabilized at 780.25 nm with a linewidth of ~0.13 nm, while the other achieves a continuous tuning range of 772.24–786.43 nm with a linewidth of ~0.17 nm. The system exhibits a side-mode suppression ratio exceeding 20 dB across the entire tuning range. At a dual-wavelength separation of 4.29 nm, the total output power reaches 2.62 W. Additionally, we successfully validate the system’s potential for nonlinear optical applications.
Source: Photonics
Authors: Huizi Zhao, Zi Ye, Longfei Jiang, Liang Li, Rui Wang, Zining Yang, Weiqiang Yang, Hongyan Wang, Weihong Hua, Xiaojun Xu
Institution: National University of Defense Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
OpenAlex ID: W4414947863