Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings
795 nm oxide-confined distributed feedback (DFB) lasers have been developed. The oxide-confined structure is used to realize lateral optical and current confinement, and the first-order surface gratings offer the frequency selectivity for single-longitudinal mode operation. The fabricated 200-&#...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10264081/ |
| _version_ | 1797656256098336768 |
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| author | Pingping Qiu Hengjie Zhou Tongxin Wang Qiuhua Wang Qiang Kan |
| author_facet | Pingping Qiu Hengjie Zhou Tongxin Wang Qiuhua Wang Qiang Kan |
| author_sort | Pingping Qiu |
| collection | DOAJ |
| description | 795 nm oxide-confined distributed feedback (DFB) lasers have been developed. The oxide-confined structure is used to realize lateral optical and current confinement, and the first-order surface gratings offer the frequency selectivity for single-longitudinal mode operation. The fabricated 200-μm-long devices exhibited a low-threshold current of ∼4.8 mA, a 3-dB modulation bandwidth of ∼5.8 GHz and maintained stable single mode operation around 795 nm with side mode suppression ratio (SMSR) as high as ∼40 dB. The simple and compact laser structure greatly reduces the difficulty of device design and fabrication compared with traditional DFB lasers. The characteristics of the laser, including low-threshold current, single mode stability and potentially narrow spectral linewidth, make it a suitable candidate for applications in absorption spectroscopy of the rubidium D1 line, chip-scale atomic clocks, magnetometers, and gyroscopes. |
| first_indexed | 2024-03-11T17:26:44Z |
| format | Article |
| id | doaj.art-7d758fdb60cf420b8a75c128e238d81c |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-11T17:26:44Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-7d758fdb60cf420b8a75c128e238d81c2023-10-18T23:00:12ZengIEEEIEEE Photonics Journal1943-06552023-01-011561710.1109/JPHOT.2023.331931410264081Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface GratingsPingping Qiu0https://orcid.org/0000-0001-8805-6882Hengjie Zhou1Tongxin Wang2Qiuhua Wang3Qiang Kan4https://orcid.org/0000-0002-2683-1967Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China795 nm oxide-confined distributed feedback (DFB) lasers have been developed. The oxide-confined structure is used to realize lateral optical and current confinement, and the first-order surface gratings offer the frequency selectivity for single-longitudinal mode operation. The fabricated 200-μm-long devices exhibited a low-threshold current of ∼4.8 mA, a 3-dB modulation bandwidth of ∼5.8 GHz and maintained stable single mode operation around 795 nm with side mode suppression ratio (SMSR) as high as ∼40 dB. The simple and compact laser structure greatly reduces the difficulty of device design and fabrication compared with traditional DFB lasers. The characteristics of the laser, including low-threshold current, single mode stability and potentially narrow spectral linewidth, make it a suitable candidate for applications in absorption spectroscopy of the rubidium D1 line, chip-scale atomic clocks, magnetometers, and gyroscopes.https://ieeexplore.ieee.org/document/10264081/Distributed feedback lasersurface gratingsingle modelow threshold current |
| spellingShingle | Pingping Qiu Hengjie Zhou Tongxin Wang Qiuhua Wang Qiang Kan Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings IEEE Photonics Journal Distributed feedback laser surface grating single mode low threshold current |
| title | Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings |
| title_full | Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings |
| title_fullStr | Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings |
| title_full_unstemmed | Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings |
| title_short | Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings |
| title_sort | low threshold 795 nm oxide confined distributed feedback lasers with surface gratings |
| topic | Distributed feedback laser surface grating single mode low threshold current |
| url | https://ieeexplore.ieee.org/document/10264081/ |
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