Design and experimental demonstration of photonic-crystal lasers with multijunction active layers
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910619560574976 |
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| author | Katsuno, Shumpei Yoshida, Masahiro Inoue, Takuya De Zoysa, Menaka Hatsuda, Ranko Ishizaki, Kenji Noda, Susumu |
| author_facet | Katsuno, Shumpei Yoshida, Masahiro Inoue, Takuya De Zoysa, Menaka Hatsuda, Ranko Ishizaki, Kenji Noda, Susumu |
| contents | We introduce multijunction active layers, featuring a stack of alternating active layers and tunnel junctions, to PCSELs to increase their slope efficiency, which is vital for various applications including laser processing and LiDAR. First, we design a multijunction PCSEL that avoids optical absorption in the heavily-doped tunnel junctions while allowing sufficient optical gain and resonance effects in the active and photonic crystal layers. Next, we fabricate a 3-mm-diameter two-junction PCSEL, achieving a slope efficiency of 1.58 W/A, which is over twice as high as that of conventional single-junction PCSELs, and a record-high peak output power of 1.8 kW for PCSELs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_16880 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Design and experimental demonstration of photonic-crystal lasers with multijunction active layers Katsuno, Shumpei Yoshida, Masahiro Inoue, Takuya De Zoysa, Menaka Hatsuda, Ranko Ishizaki, Kenji Noda, Susumu Optics Applied Physics We introduce multijunction active layers, featuring a stack of alternating active layers and tunnel junctions, to PCSELs to increase their slope efficiency, which is vital for various applications including laser processing and LiDAR. First, we design a multijunction PCSEL that avoids optical absorption in the heavily-doped tunnel junctions while allowing sufficient optical gain and resonance effects in the active and photonic crystal layers. Next, we fabricate a 3-mm-diameter two-junction PCSEL, achieving a slope efficiency of 1.58 W/A, which is over twice as high as that of conventional single-junction PCSELs, and a record-high peak output power of 1.8 kW for PCSELs. |
| title | Design and experimental demonstration of photonic-crystal lasers with multijunction active layers |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2409.16880 |