Design and experimental demonstration of photonic-crystal lasers with multijunction active layers
Optics
2024-09-26 v1 Applied Physics
Abstract
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.
Keywords
Cite
@article{arxiv.2409.16880,
title = {Design and experimental demonstration of photonic-crystal lasers with multijunction active layers},
author = {Shumpei Katsuno and Masahiro Yoshida and Takuya Inoue and Menaka De Zoysa and Ranko Hatsuda and Kenji Ishizaki and Susumu Noda},
journal= {arXiv preprint arXiv:2409.16880},
year = {2024}
}
Comments
11 pages, 4 figures, 1 table