Organic Microcrystal Vibronic Lasers with Full‐Spectrum Tunable Output beyond the Franck–Condon Principle

• DOI: 10.1002/ange.201712524
• Publication Date: 2018-01-17T16:29:54Z
• Authors: Haiyun Dong; Chunhuan Zhang; Yuan Liu; Yongli Yan; Fengqin Hu; Yong Sheng Zhao
• Keywords: Franck–Condon principle; Vibronic spectroscopy; Vibronic coupling

Abstract The very broad emission bands of organic semiconductor materials are, in theory, suitable for achieving versatile solid‐state lasers; however, most only lase at short wavelength corresponding to the 0–1 transition governed by Franck–Condon (FC) principle. A strategy is developed overcome limit FC principle tailoring output microlasers over a wide range based on controlled vibronic microcrystal state. For first time, lasers tailored across all (0–1, 0–2, 0–3, and even 0–4) spanning entire spectrum.