Tunable random lasing emissions by manipulating plasmonic coupling strengths on flexible substrates

Ting Wei Yeh, Chun Yang Chou, Zu Po Yang, Nguyen Thi Bich Hanh, Yung Chi Yao, Meng Tsan Tsai, Hao Chun Kuo, Ya Ju Lee

研究成果: 書貢獻/報告類型會議貢獻

摘要

A random laser is a unique system in which an assembly of disordered scatters is distributed all over the gain medium to sustain the required optical feedbacks by multiple scatterings for the stimulation of lasing action. Due to the absence of well-defined resonance cavity or rigid alignment of optical elements, it is hence difficult to control the random lasing emissions. In this study, we experimentally demonstrated a flexible random laser fabricated on the polyethylene terephthalate (PET) substrate with a high degree of tunability in lasing emissions. Random lasing wavelength is blue-shifted monolithically with the increasing of bending strains exerted on the PET substrate, and the maximum shift of lasing wavelength of ∼15 nm was achieved as a 50% bending strain is exerted on the PET substrate. Such observation is highly repeatable and reversible, and it validates that we are able to control the lasing wavelengths by simply bending the flexible substrate. The result herein shows a great advance for the applications of flexible optoelectronic devices, including wearable devices, ultrathin display, and health sensors.

原文英語
主出版物標題2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings
主出版物子標題Applications and Technology, CLEO_AT 2018
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781557528209
ISBN(列印)9781943580422
DOIs
出版狀態已發佈 - 2018 八月 6
事件2018 Conference on Lasers and Electro-Optics, CLEO 2018 - San Jose, 美国
持續時間: 2018 五月 132018 五月 18

出版系列

名字2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings

會議

會議2018 Conference on Lasers and Electro-Optics, CLEO 2018
國家美国
城市San Jose
期間18/5/1318/5/18

ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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    Yeh, T. W., Chou, C. Y., Yang, Z. P., Hanh, N. T. B., Yao, Y. C., Tsai, M. T., Kuo, H. C., & Lee, Y. J. (2018). Tunable random lasing emissions by manipulating plasmonic coupling strengths on flexible substrates. 於 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings: Applications and Technology, CLEO_AT 2018 [8426910] (2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1364/CLEO_AT.2018.JTh2A.52