A tunable blue random laser based on solid waveguide gain films with plasmonics and scatters

• Published in: Journal of alloys and compounds 2019-06, Vol.790, p.558-562
• Main Authors: Li, Xueyang, Hong, Feng, Wang, Shiping, He, Shan, Jin, Shengye, Guo, Jingwei, Yuan, Hong, Lv, Qipeng, Hu, Shu, Wang, Pengyuan, Jin, Yuqi, Sang, Fengting
• Format: Article
• Language: English
• Subjects: Blue random laser; Laser applications; Lasers; Localized surface-plasmon resonance; Multiple scattering; Nanoparticles; Plasmonics; Resonance scattering; Silicon dioxide; Silver; Tunable; Tunable lasers
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2019.03.202

A tunable blue random laser based on solid waveguide gain films with silver nanoparticles (NPs) and SiO2 NPs is demonstrated. Localized surface plasmon resonance (LSPR) property and multiple scattering are proven playing an important role simultaneously. The tunability of the blue random laser is realized by simply roughing and changing the thickness of the solid waveguide gain films. To our knowledge, it is the first time using this method to achieve a wide wavelength tuning range of ∼24 nm. •Tunable blue random laser based on solid waveguide gain films.•Plasmonics and scatterers are playing an important role.•Ag nanoparticles with diameters of 4.8 nm are harmful to random lasing.•Emission wavelength can be tuned with changing the thickness of gain films.