White Lasing and White Fluorescence from the Simplified Two‐Dyes Organic System

• Published in: Advanced optical materials Vol. 11; no. 16
• Main Authors: Szukalska, Alina, Szukalski, Adam, Adaszynski, Marek, Mysliwiec, Jaroslaw
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01-08-2023
• Subjects: Dyes; Fluorescence; Laser applications; laser spectroscopy; Lasers; Lasing; Liquid crystals; Materials science; Optical pumping; Optics; Optoelectronics; perylene; random lasing; soft matter; white fluorescence; white lasing
• ISSN: 2195-1071; 2195-1071
• DOI: 10.1002/adom.202300266

The invention of lasers, which took place a few decades ago, marks a milestone in the past, present, and future technologies in optoelectronics. In particular, the colorful and white tones produced by lasers are appealing from a utilization standpoint and align well with human eye perception. In this paper, an idea for a white laser based on the attractive perylene family of luminescent dyes is introduced. This concept provides multicolor emission and brilliant photostability upon external optical pumping. The main advantage of the approach is the construction of a fully organic and two‐component white laser. The versatility of the system is demonstrated by assembling multicolor, tunable, and efficient fluorescent systems using a liquid crystalline matrix, which is supported by comprehensive experimental studies. Additionally, by utilizing laser spectroscopy techniques, it is able to narrow the emission bandwidth and enhance the light in a typical synthetic polymeric matrix. This leads to the realization of white lasing emission with just two luminescent dyes: perylene blue and perylene orange.
A simplified system capable of white lasing and fluorescence with the use of only two perylene chromophores is demonstrated. The versatile, tunable, and efficient white fluorescence in a liquid crystalline environment is presented. By narrowing the emission bandwidth and employing laser spectroscopy techniques, white random lasing is successfully achieved. The findings suggest potential applications in future lighting and optical imaging systems.