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Optical Bistability in Nanosilicon with Record Low Q-Factor.
Nishida, Kentaro; Tseng, Po-Hsueh; Chen, Yu-Chieh; Wu, Pang-Han; Yang, Chi-Yin; Yang, Jhen-Hong; Chen, Wei-Ruei; Pashina, Olesiya; Petrov, Mihail I; Chen, Kuo-Ping; Chu, Shi-Wei.
Afiliação
  • Nishida K; Department of Physics, National Taiwan University, 1, Sec 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Tseng PH; Department of Physics, National Taiwan University, 1, Sec 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Chen YC; Department of Physics, National Taiwan University, 1, Sec 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Wu PH; Department of Physics, National Taiwan University, 1, Sec 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Yang CY; Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, 301 Gaofa third Road, Tainan 711, Taiwan.
  • Yang JH; Institute of Photonic System, National Yang Ming Chiao Tung University, 301 Gaofa third Road, Tainan 711, Taiwan.
  • Chen WR; Institute of Photonic System, National Yang Ming Chiao Tung University, 301 Gaofa third Road, Tainan 711, Taiwan.
  • Pashina O; Physics and Engineering Department, ITMO University, St. Petersburg 197101, Russia.
  • Petrov MI; Physics and Engineering Department, ITMO University, St. Petersburg 197101, Russia.
  • Chen KP; Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, 301 Gaofa third Road, Tainan 711, Taiwan.
  • Chu SW; Institute of Photonics Technology, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, R.O.C.
Nano Lett ; 23(24): 11727-11733, 2023 Dec 27.
Article em En | MEDLINE | ID: mdl-38014963
We demonstrated optical bistability in an amorphous silicon Mie resonator with a size of ∼100 nm and Q-factor as low as ∼4 by utilizing photothermal and thermo-optical effects. We not only experimentally confirmed the steep intensity transition and the hysteresis in the scattering response from silicon nanocuboids but also established a physical model to numerically explain the underlying mechanism based on temperature-dependent competition between photothermal heating and heat dissipation. The transition between the bistable states offered particularly steep superlinearity of scattering intensity, reaching an effective nonlinearity order of ∼100th power over excitation intensity, leading to the potential of advanced optical switching devices and super-resolution microscopy.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article