Author(s): Liu, ZW (Liu, Zhenwu); Liu, SP (Liu, Suping); Wang, CL (Wang, Cuiluan); Zhao, F (Zhao, Fang); Xing, W (Xing, Wang); Xiong, C (Xiong, Cong); Zhu, LN (Zhu, Lingni); Ma, XY (Ma, Xiaoyu)

Source: OPTICS LETTERS  Volume: 49  Issue: 12  Pages: 3448-3451  DOI: 10.1364/OL.524601  Published Date: 2024 JUN 15  

Abstract: High-power semiconductor lasers with stabilized wavelengths are recognized as exemplary pumping sources for solid-state lasers. This study introduces distributed feedback (DFB) laser diode arrays designed to maintain an extensive temperature locking range. We report experimentally on high-power 808 nm DFB laser diode arrays. The first-order sinusoidal grating was fabricated using nanoimprint lithography, succeeded by inductively coupled plasma (ICP) dry etching and subsequent wet polishing. These 808 nm DFB laser diode arrays have demonstrated a measured output power of 134 W under a pulsed current of 150 A, with the heat sink temperature maintained at 25 degrees C. The slope efficiency was determined to be 1.1 W/A. At a current of 150 A, the laser operated with a narrow spectral width over a wide temperature range, extending from -30 to 90 degrees C, with a temperature drift coefficient of 0.0595 nm/K. (c) 2024 Optica Publishing Group

Accession Number: WOS:001254874200003

PubMed ID: 38875642

Author Identifiers:

Author Web of Science ResearcherID ORCID Number

Liu, Zhenwu 0009-0006-1361-3430 

ISSN: 0146-9592

eISSN: 1539-4794