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Organic Microcrystal Vibronic Lasers with Full‐Spectrum Tunable Output beyond the Franck–Condon Principle
Author(s) -
Dong Haiyun,
Zhang Chunhuan,
Liu Yuan,
Yan Yongli,
Hu Fengqin,
Zhao Yong Sheng
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201712524
Subject(s) - franck–condon principle , vibronic spectroscopy , laser , wavelength , materials science , tunable laser , optoelectronics , emission spectrum , vibronic coupling , atomic physics , photochemistry , chemistry , optics , physics , spectral line , excited state , quantum mechanics
The very broad emission bands of organic semiconductor materials are, in theory, suitable for achieving versatile solid‐state lasers; however, most of organic materials only lase at short wavelength corresponding to the 0–1 transition governed by the Franck–Condon (FC) principle. A strategy is developed to overcome the limit of FC principle for tailoring the output of microlasers over a wide range based on the controlled vibronic emission of organic materials at microcrystal state. For the first time, the output wavelength of organic lasers is tailored across all vibronic (0–1, 0–2, 0–3, and even 0–4) bands spanning the entire emission spectrum.