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
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
收藏
页码:1232 / 1235
页数:4
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