Monolithic dual-wavelength high-power DFB laser with sub-100 kHz linewidth for THz application

被引：0

作者：

Liu, Te-hua ^{[1
,2
]}

Tu, You-yu ^{[3
]}

Lu, Yi-hsuan ^{[4
]}

Yang, Sung-pu ^{[4
]}

Wu, Chao-hsin ^{[1
,2
,3
,4
]}

机构：

[1] Natl Taiwan Univ, Grad Sch Adv Technol, Taipei 106319, Taiwan

[2] Natl Taiwan Univ, Ctr Quantum Sci & Engn, Taipei 106319, Taiwan

[3] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 106319, Taiwan

[4] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 106319, Taiwan

来源：

OPTICS LETTERS | 2025年 / 50卷 / 04期

关键词：

TERAHERTZ; SPECTROSCOPY;

D O I：

10.1364/OL.553264

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report an optimized monolithic dual-wavelength distributed feedback (DFB) laser for terahertz (THz) applications, designed to address the challenges of complexity, cost, and power efficiency in a THz transmitter. This laser can achieve a high optical power of 65.93 mW. Under a wide temperature range and high-bias current, the power difference between the two primary modes remains below 1 dB, with each side- mode suppression ratio exceeding 36 dB. Additionally, the two primary modes exhibit low relative intensity noise peaks of -153.88 dB/Hz and -153.46 dB/Hz and narrow linewidths of 117.33 kHz and 70.59 kHz, demonstrating stable and high-performance dual-wavelength operation. These results underscore the potential of the dual-wavelength (DW)-DFB laser as a compact and cost-effective solution for THz systems. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

引用

页码：1232 / 1235

页数：4

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