Open AccessTwo Photon–Pumped Whispering‐Gallery Mode Lasing and Dynamic Regulation
Author(s) -
Lu Junfeng,
Li Fangtao,
Ma Wenda,
Hu Jufang,
Peng Yiyao,
Yang Zheng,
Chen Qiushuo,
Xu Chunxiang,
Pan Caofeng,
Wang Zhong Lin
Publication year - 2019
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201900916
Subject(s) - lasing threshold , whispering gallery wave , photon upconversion , laser , optoelectronics , materials science , photon , optics , whispering gallery , two photon absorption , wavelength , physics
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 TE 33 and TE 32 modes, respectively. This work provides a new strategy for building high‐performance mode‐adjustable frequency upconversion lasers.