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Open AccessArticle

Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
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Polymers 2020, 12(3), 656; https://doi.org/10.3390/polym12030656
Received: 21 February 2020 / Revised: 10 March 2020 / Accepted: 11 March 2020 / Published: 13 March 2020
(This article belongs to the Special Issue Laser Processing of Polymer Materials II)
A compound cavity was proposed to achieve both whispering gallery mode (WGM) lasing and random lasing. The WGM-random compound cavity consisted of a random structure with an annular boundary, which was fabricated by a method combining both inkjet printing and metal-assisted chemical etching methods. An ultrathin polymer membrane was attached to the WGM-random compound cavity, forming a polymer laser device. A transformation from WGM lasing to random lasing was observed under optical pumping conditions. The laser performance could be easily tailored by changing the parameter of the WGM-random compound cavity. These results provide a new avenue for the design of integrated light sources for sensing applications. View Full-Text
Keywords: whispering gallery mode; random laser; polymer laser; compound cavity whispering gallery mode; random laser; polymer laser; compound cavity
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MDPI and ACS Style

Xu, Z.; Tong, J.; Shi, X.; Deng, J.; Zhai, T. Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity. Polymers 2020, 12, 656.

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