固态
材料科学
衍生工具(金融)
激光器
有机半导体
光电子学
光化学
化学
光学
物理化学
物理
金融经济学
经济
作者
Daniel Schneider,Torsten Rabe,Thomas Riedl,T. Dobbertin,Oliver Werner,Michael Kröger,E. Becker,H.‐H. Johannes,Wolfgang Kowalsky,T. Weimann,J. Wang,P. Hinze,A. Gerhard,Philipp Stößel,H. Vestweber
摘要
We report on amplified spontaneous emission and optically pumped deep blue lasing in the organic spirobifluorene derivative 2,7-bis(biphenyl-4-yl)-2′,7′-di-tert-butyl-9,9′-spirobifluorene. Solid-state lasing is observed in thin films of this material deposited on a distributed-feedback (DFB) grating substrate. The laser wavelength can be tuned from 401.5 to 434.2 nm depending on the grating period of the Bragg reflector. The blue edge of this interval at 401.5 nm makes this laser an extremely short wavelength organic DFB laser. When pumping with a pulsed nitrogen laser at 337 nm, we observe a laser threshold energy density of 83 μJ/cm2. These results render this spiro compound an excellent candidate for blue-emitting diode lasers.
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