Selective Pump Focusing on Individual Laser Modes in Microcavities
- Authors
- Choi, Jae-Hyuck; Chang, Sehwan; Kim, Kyoung-Ho; Choi, Wonjun; Lee, Soon-Jae; Lee, Jung Min; Hwang, Min-Soo; Kim, Jungkil; Jeong, Seungwon; Seo, Min-Kyo; Choi, Wonshik; Park, Hong-Gyu
- Issue Date
- Jul-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- semiconductor laser; single-mode laser; laser beam shaping; scattering medium; energy transfer
- Citation
- ACS PHOTONICS, v.5, no.7, pp.2791 - 2798
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS PHOTONICS
- Volume
- 5
- Number
- 7
- Start Page
- 2791
- End Page
- 2798
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/74489
- DOI
- 10.1021/acsphotonics.8b00648
- ISSN
- 2330-4022
- Abstract
- We demonstrate selective pump focusing for highly isolated single-mode lasers in microdisk and microring cavities, and achieve lasing action from a microdisk cavity underneath a scattering medium. The spatial profile of the pumping light evolves by an iterative feedback process and is optimized to maximize the field overlap with a selected cavity mode. The high order of mode selectivity and high resolving power are obtained in a multimode cavity in the presence of significant modal overlaps. As a result of the adaptive optical pumping, we successfully achieve the efficient energy transfer to a microdisk underneath a random scattering medium and observe lasing action through the scattering medium. We believe that our selective pumping procedure will pave the way for the development of low-threshold, single-mode nanolasers embedded in various materials.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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