Polymer Lasing in a Periodic-Random Compound Cavity

Tianrui Zhai; Xiaofeng Wu; Songtao Li; Shuyan Liang; Lianze Niu; Meng Wang; Shengfei Feng; Hongmei Liu; Xinping Zhang

doi:10.3390/polym10111194

Polymer Lasing in a Periodic-Random Compound Cavity

Polymers (Basel). 2018 Oct 26;10(11):1194. doi: 10.3390/polym10111194.

Authors

Tianrui Zhai¹, Xiaofeng Wu², Songtao Li³, Shuyan Liang⁴, Lianze Niu⁵, Meng Wang⁶, Shengfei Feng⁷, Hongmei Liu⁸, Xinping Zhang⁹

Affiliations

¹ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. trzhai@bjut.edu.cn.
² Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. wuxiaofeng0108@163.com.
³ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. songtaoli2001@126.com.
⁴ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. 17110720020@fudan.edu.cn.
⁵ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. niulianze@126.com.
⁶ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. wangmeng004@emails.bjut.edu.cn.
⁷ Department of Physics, Capital Normal University, Beijing 100048, China. fengshengfei@hotmail.com.
⁸ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. hmliu@bjut.edu.cn.
⁹ Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China. zhangxinping@bjut.edu.cn.

Abstract

Simultaneous distributed feedback (DFB) lasing and linear polarized random lasing are observed in a compound cavity, which consists of a grating cavity and a random cavity. The grating cavity is fabricated by interference lithography. A light-emitting polymer doped with silver nanoparticles is spin-coated on the grating, forming a random cavity. DFB lasing and random lasing occur when the periodic-random compound cavity is optically pumped. The directionality and polarization of the random laser are modified by the grating structure. These results can potentially be used to design integrated laser sources.

Keywords: compound cavity; distributed feedback laser; polymer laser; random laser.

Abstract

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