Wu Zong Yu, Jian Bo-Lun, Wu Chun-Sheng, Hsu Hsu-Cheng
Opt Express. 2020 Jul 20;28(15):21805-21813. doi: 10.1364/OE.395821.
We report the CsPbI random lasing at room temperature fabricated by a chemical deposition method. The CsPbI thin films with high crystalline quality have intense PL emission and easily achieve the lasing behavior with the Q-factor value over 7000. The lasing behavior of CsPbI thin films can be classified as random lasing by measuring lasing spectra at different collective angles. The fast Fourier transform analysis of the lasing spectra is employed to determine the effective cavity length. Most important of all, the lasing stability investigation shows the prolonged lasing stability over 4.8 X 10 laser shots in air.
我们报道了通过化学沉积法在室温下制备的CsPbI随机激光。具有高结晶质量的CsPbI薄膜具有强烈的光致发光发射，并且很容易实现品质因数超过7000的激光行为。通过测量不同收集角度下的激光光谱，CsPbI薄膜的激光行为可归类为随机激光。利用激光光谱的快速傅里叶变换分析来确定有效腔长。最重要的是，激光稳定性研究表明，在空气中，激光稳定性可延长超过4.8×10次激光脉冲。
