QUINOLINIUM SINGLE CRYSTALS FOR USE IN NONLINEAR OPTICS
申请人:AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
公开号:US20140204457A1
公开(公告)日:2014-07-24
The present invention relates to quinolinium-derived single crystals for use in nonlinear optics, which exhibit high molecular orientation and macroscopic optical nonlinearity. When the quinolinium-derived crystals according to the present invention are applied to THz wave light sources, higher THz wave generating efficiency may be obtained as compared with inorganic crystals or existing organic M crystals.
We have designed and synthesized a new, highly efficient electro-optic vanillin-based quinolinium crystal. The HMQ-NS (2-(4-hydroxy-3-methoxystyryl)-1-methylquinolinium naphthalene-2-sulfonate) crystals exhibit an acentric monoclinic space group symmetry Pn with a large effective molecular hyperpolarizability in the crystal with the diagonal component βeff333 = 149 × 10−30 esu, which is comparable to that of benchmark ionic stilbazolium crystals, and a good thermal stability. Therefore, the newly developed HMQ-NS crystal is an attractive candidate for nonlinear optical and electro-optic applications.