High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width
The 7xx nm laser diode is the core pump source for Diode Pumped Alkali Vapor Laser (DPAL). For these applications, high power and narrow spectral width are essential. Traditional Fabry-Pérot (FP) diode lasers can provide high continuous output power, but their spectral width is too broad...
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| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10769983/ |
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| author | Lihong Zhu Wuling Liu Jiahan Qin Ye Shao Shaoyang Tan Jun Wang |
| author_facet | Lihong Zhu Wuling Liu Jiahan Qin Ye Shao Shaoyang Tan Jun Wang |
| author_sort | Lihong Zhu |
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| description | The 7xx nm laser diode is the core pump source for Diode Pumped Alkali Vapor Laser (DPAL). For these applications, high power and narrow spectral width are essential. Traditional Fabry-Pérot (FP) diode lasers can provide high continuous output power, but their spectral width is too broad for many applications. By burying a Bragg grating within the semiconductor, a narrow and temperature-stable spectrum can be achieved. In this paper, we investigate the factors limiting the power enhancement of distributed feedback (DFB) lasers and characterize the grown gratings using transmission electron microscopy. We discuss the effects of grating coupling strength, wavelength detuning, and oxygen contamination in the grating region on performance. Under optimized growth conditions, a high-performance 780 nm DFB laser based on InGaAsP/InGaP gratings has been developed, achieving a continuous output power exceeding 10 W, which is the highest power for a 780 nm DFB laser to date. The spectral linewidth (FWHM) is less than 0.5 nm, and the device maintains locking across the entire operating current and a wide temperature range. |
| format | Article |
| id | doaj-art-0dfb52e8e4634e0e9003eb86a1debe6d |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-0dfb52e8e4634e0e9003eb86a1debe6d2025-08-20T02:34:57ZengIEEEIEEE Photonics Journal1943-06552025-01-011711610.1109/JPHOT.2024.350780210769983High Power 780 nm Broad-Area DFB Laser With Narrow Spectral WidthLihong Zhu0https://orcid.org/0009-0002-3265-9814Wuling Liu1Jiahan Qin2Ye Shao3Shaoyang Tan4Jun Wang5https://orcid.org/0000-0002-9733-9515College of Electronics and Information Engineering, Sichuan University, Chengdu, ChinaCollege of Electronics and Information Engineering, Sichuan University, Chengdu, ChinaCollege of Electronics and Information Engineering, Sichuan University, Chengdu, ChinaSuzhou Everbright Photonics Company Ltd., Suzhou, ChinaSuzhou Everbright Photonics Company Ltd., Suzhou, ChinaCollege of Electronics and Information Engineering, Sichuan University, Chengdu, ChinaThe 7xx nm laser diode is the core pump source for Diode Pumped Alkali Vapor Laser (DPAL). For these applications, high power and narrow spectral width are essential. Traditional Fabry-Pérot (FP) diode lasers can provide high continuous output power, but their spectral width is too broad for many applications. By burying a Bragg grating within the semiconductor, a narrow and temperature-stable spectrum can be achieved. In this paper, we investigate the factors limiting the power enhancement of distributed feedback (DFB) lasers and characterize the grown gratings using transmission electron microscopy. We discuss the effects of grating coupling strength, wavelength detuning, and oxygen contamination in the grating region on performance. Under optimized growth conditions, a high-performance 780 nm DFB laser based on InGaAsP/InGaP gratings has been developed, achieving a continuous output power exceeding 10 W, which is the highest power for a 780 nm DFB laser to date. The spectral linewidth (FWHM) is less than 0.5 nm, and the device maintains locking across the entire operating current and a wide temperature range.https://ieeexplore.ieee.org/document/10769983/Distributed-feedback laser780 nmhigh-powermonolithic stabilization |
| spellingShingle | Lihong Zhu Wuling Liu Jiahan Qin Ye Shao Shaoyang Tan Jun Wang High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width IEEE Photonics Journal Distributed-feedback laser 780 nm high-power monolithic stabilization |
| title | High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width |
| title_full | High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width |
| title_fullStr | High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width |
| title_full_unstemmed | High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width |
| title_short | High Power 780 nm Broad-Area DFB Laser With Narrow Spectral Width |
| title_sort | high power 780 nm broad area dfb laser with narrow spectral width |
| topic | Distributed-feedback laser 780 nm high-power monolithic stabilization |
| url | https://ieeexplore.ieee.org/document/10769983/ |
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