1. Functional organic single crystals for solid-state laser applications
- Author
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Fang, Hong-hua, Yang, Jie, Feng, Jing, Yamao, Takeshi, Hotta, Shu, Sun, Hong-Bo, and Device Physics of Complex Materials
- Subjects
light-emitting field effect transistor ,stimulated emission ,SUBSTITUTED OLIGO(P-PHENYLENE VINYLENE) ,Physics::Optics ,PHYSICAL VAPOR GROWTH ,HOT-WALL EPITAXY ,AGGREGATION-INDUCED EMISSION ,RESONANCE RAMAN-SCATTERING ,AMPLIFIED SPONTANEOUS EMISSION ,optical resonator ,organic crystal ,THIOPHENE/PHENYLENE CO-OLIGOMER ,FIELD-EFFECT TRANSISTORS ,SPECTRALLY-NARROWED EMISSIONS ,laser oscillation ,LIGHT-EMITTING TRANSISTORS - Abstract
Because of long-range order and high chemical purity, organic crystals have exhibit unique properties and attracted a lot of interest for application in solid-state lasers. As optical gain materials, they exhibit high stimulated emission cross section and broad tunable wavelength emission as similar to their amorphous counterpart; moreover, high purity and high order give them superior properties such as low scattering trap densities, high thermal stability, as well as highly polarized emission. As electronic materials, they are potentially able to support high current densities, thus making it possible to realize current driven lasers. This paper mainly describes recent research progress in organic semiconductor laser crystals. The building molecules, crystal growth methods, as well as their stimulated emission characteristics related with crystal structures are introduced; in addition, the current state-of-the-art in the field of crystal laser devices is reviewed. Furthermore, recent advances of crystal lasers at the nanoscale and single crystal light-emitting transistors (LETs) are presented. Finally, an outlook and personal view is provided on the further developments of laser crystals and their applications.
- Published
- 2014