Design of a nanogap resonator surface plasmon polariton laser
- Authors
- Oh, Geum-Yoon; Kim, Hyungchan; Ko, Jeong Beom; Park, Choon Keun; Choi, Young Wan
- Issue Date
- Jun-2020
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS LETTERS, v.45, no.11, pp 2961 - 2964
- Pages
- 4
- Journal Title
- OPTICS LETTERS
- Volume
- 45
- Number
- 11
- Start Page
- 2961
- End Page
- 2964
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/41751
- DOI
- 10.1364/OL.390868
- ISSN
- 0146-9592
1539-4794
- Abstract
- The inherent tradeoff between the optical mode confinement and the propagation loss due to the high dissipation level of metals has proved to be a significant setback in the design of plasmonic waveguide-based devices. In this Letter, we demonstrate a ring-less nanogap resonator consisting of two straight waveguides with metallic layers and a nanogap between. A finite-difference time-domain simulation of the proposed structure reveals that it exhibits a band-stop and lasing characteristics. The obtained full-width at half-maximum, free spectral range, and Q-factor values are found to be improved as compared to those obtained without a nanogap. Thus, to the best of our knowledge, the new resonator and laser structure can be obtained through the waveguide structure without the ring-shaped resonator. (C) 2020 Optical Society of America
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