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Two Photon-Pumped Whispering-Gallery Mode Lasing and Dynamic Regulation.

ABSTRACT: Realizing the dynamic regulation of nonlinear optical signals has a great scientific significance for the development of new-type nonlinear optoelectronic devices and expands its application in the field of laser technology, spectroscopy, material structure analysis, etc. Here, two photon absorption-induced whispering-gallery mode lasing from a single ZnO microresonator with a relatively low lasing threshold (15 µW) and high quality factor (Q ? 3200) under ambient conditions is demonstrated. Furthermore, success is achieved in obtaining the dynamic regulation of two photon-pumped lasing mode in the UV gain region. The corresponding resonant wavelength can be tuned dynamically from 388.99 and 391.12 to 390.01 and 392.12 nm for TE₃₃ and TE₃₂ modes, respectively. This work provides a new strategy for building high-performance mode-adjustable frequency upconversion lasers.

SUBMITTER: Lu J

PROVIDER: S-EPMC6864518 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Two Photon-Pumped Whispering-Gallery Mode Lasing and Dynamic Regulation.

Lu Junfeng J Li Fangtao F Ma Wenda W Hu Jufang J Peng Yiyao Y Yang Zheng Z Chen Qiushuo Q Xu Chunxiang C Pan Caofeng C Wang Zhong Lin ZL

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20190930 22

Realizing the dynamic regulation of nonlinear optical signals has a great scientific significance for the development of new-type nonlinear optoelectronic devices and expands its application in the field of laser technology, spectroscopy, material structure analysis, etc. Here, two photon absorption-induced whispering-gallery mode lasing from a single ZnO microresonator with a relatively low lasing threshold (15 µW) and high quality factor (<i>Q</i> ≈ 3200) under ambient conditions is demonstrat ...[more]

PMID: 31763135

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