Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide
We present a detailed study of the effect of large optical cavity (LOC) waveguide design on the laser's kink performance and it was found that a multimode waveguide in the epi growth direction could lead to the occurrence of the power kink in the light–current (<italic>L&...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8303212/ |
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| author | Bocang Qiu H. Martin Hu Weimin Wang Wenbin Liu Shujuan Wu Zhiguo Song Xue Bai |
| author_facet | Bocang Qiu H. Martin Hu Weimin Wang Wenbin Liu Shujuan Wu Zhiguo Song Xue Bai |
| author_sort | Bocang Qiu |
| collection | DOAJ |
| description | We present a detailed study of the effect of large optical cavity (LOC) waveguide design on the laser's kink performance and it was found that a multimode waveguide in the epi growth direction could lead to the occurrence of the power kink in the light–current (<italic>L–I</italic>) curve, and the occurrence of the power kink was accompanied with the broadening of the beam divergence in the wafer growth direction. In order to eliminate the kink issue that is associated with the lasing of the higher-order modes, a new type of waveguide, which is called higher-order-mode tunneling waveguide, was proposed in our design. The new type of waveguide can strongly promote the leakage of higher-order modes, and in this way, the LOC waveguide becomes single-moded. Test of the fabricated devices based on the new design showed that the devices indeed exhibited perfect <italic>L–I</italic> linearity without kinks. |
| format | Article |
| id | doaj-art-ae7693e582b140ba86afe6e8408ca191 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-ae7693e582b140ba86afe6e8408ca1912025-08-20T03:32:57ZengIEEEIEEE Photonics Journal1943-06552018-01-011021710.1109/JPHOT.2018.28101258303212Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity WaveguideBocang Qiu0https://orcid.org/0000-0002-2771-7939H. Martin Hu1Weimin Wang2Wenbin Liu3Shujuan Wu4Zhiguo Song5Xue Bai6https://orcid.org/0000-0003-2744-9601The Research Institute of Tsinghua University in Shenzhen, Shenzhen, ChinaThe Research Institute of Tsinghua University in Shenzhen, Shenzhen, ChinaRaybow Optoelectronics Ltd. Inc., Shenzhen, ChinaRaybow Optoelectronics Ltd. Inc., Shenzhen, ChinaRaybow Optoelectronics Ltd. Inc., Shenzhen, ChinaRaybow Optoelectronics Ltd. Inc., Shenzhen, ChinaRaybow Optoelectronics Ltd. Inc., Shenzhen, ChinaWe present a detailed study of the effect of large optical cavity (LOC) waveguide design on the laser's kink performance and it was found that a multimode waveguide in the epi growth direction could lead to the occurrence of the power kink in the light–current (<italic>L–I</italic>) curve, and the occurrence of the power kink was accompanied with the broadening of the beam divergence in the wafer growth direction. In order to eliminate the kink issue that is associated with the lasing of the higher-order modes, a new type of waveguide, which is called higher-order-mode tunneling waveguide, was proposed in our design. The new type of waveguide can strongly promote the leakage of higher-order modes, and in this way, the LOC waveguide becomes single-moded. Test of the fabricated devices based on the new design showed that the devices indeed exhibited perfect <italic>L–I</italic> linearity without kinks.https://ieeexplore.ieee.org/document/8303212/High power semiconductor laserslarge optical cavitysingle mode waveguide. |
| spellingShingle | Bocang Qiu H. Martin Hu Weimin Wang Wenbin Liu Shujuan Wu Zhiguo Song Xue Bai Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide IEEE Photonics Journal High power semiconductor lasers large optical cavity single mode waveguide. |
| title | Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide |
| title_full | Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide |
| title_fullStr | Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide |
| title_full_unstemmed | Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide |
| title_short | Improved 808-nm High-Power Laser Performance With Single-Mode Operation (Vertical Direction) in Large Optical Cavity Waveguide |
| title_sort | improved 808 nm high power laser performance with single mode operation vertical direction in large optical cavity waveguide |
| topic | High power semiconductor lasers large optical cavity single mode waveguide. |
| url | https://ieeexplore.ieee.org/document/8303212/ |
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