A White Random Laser
Journal
Scientific Reports
Journal Volume
8
Pages
2720
Date Issued
2018
Author(s)
Chang, Shu-Wei
Liao, Wei-Cheng
Liao, Yu-Ming
Lin, Hung-I.
Lin, Hsia-Yu
Lin, Wei-Ju
Lin, Shih-Yao
Perumal, Packiyaraj
Haider, Golam
Tai, Chia-Tse
Shen, Kun-Ching
Chang, Cheng-Han
Huang, Yuan-Fu
Lin, Tai-Yuan
Abstract
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.
Type
journal article