Journal Article

A White Random Laser

Lin, Shih-Yao, Chen, Yang-Fang, Haider, Golam, Shen, Kun-Ching, Lin, Hung-I, Chang, Cheng-Han, Lin, Hsia-Yu, Huang, Yuan-Fu, Chang, Shu-Wei, Lin, Tai-Yuan, Liao, Yu-Ming, Perumal, Packiyaraj, Liao, Wei-Cheng, Lin, Wei-Ju, Tai, Chia-Tse

2018

Overview

Random laser with intrinsically uncomplicated fabrication processes, high spectral radiance, angle-free emission, and conformal onto freeform surfaces is in principle ideal for a variety of applications, ranging from lighting to identification systems. In this work, a white random laser (White-RL) with high-purity and high-stability is designed, fabricated, and demonstrated via the cost-effective materials ( e.g ., organic laser dyes) and simple methods ( e.g ., all-solution process and self-assembled structures). Notably, the wavelength, linewidth, and intensity of White-RL are nearly isotropic, nevertheless hard to be achieved in any conventional laser systems. Dynamically fine-tuning colour over a broad visible range is also feasible by on-chip integration of three free-standing monochromatic laser films with selective pumping scheme and appropriate colour balance. With these schematics, White-RL shows great potential and high application values in high-brightness illumination, full-field imaging, full-colour displays, visible-colour communications, and medical biosensing.

• Publisher: Nature Publishing Group UK,Nature Publishing Group
• Subject: 140/125 / 639/301/1019 / 639/624/1020 / Biosensors / Color / Fabrication / Humanities and Social Sciences / Lasers / multidisciplinary / Science / Science (multidisciplinary)