New Organic Nonlinear Optical Verbenone-Based Triene Crystal for Terahertz Applications

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• 作者：O-Pil Kwon ; Seong-Ji Kwon ; Marcel Stillhart ; Mojca Jazbinsek ; Arno Schneider ; Volker Gramlich ; Peter Gü ; nter
• 刊名：Crystal Growth & Design
• 出版年：2007
• 出版时间：December 2007
• 年：2007
• 卷：7
• 期：12
• 页码：2517 - 2521
• 全文大小：869K
• 年卷期：v.7,no.12(December 2007)
• ISSN：1528-7505

文摘

New organic nonlinear optical verbenone-based triene crystals have been developed, investigated and compared to analogous isophorone-based triene crystals studied previously. The verbenone-based crystals show molecular conformation and crystal structure similar to the analogous isophorone-based crystals and therefore retain large macroscopic nonlinearity and high thermal stability. However, other physical properties are improved; for example, the solubility in acetonitrile is about 2.5 times higher, and the melting temperature is about 13 °C lower, which are an advantage for solution and melt crystal growth, respectively. The verbenone-based crystals of sufficient size for bulk nonlinear optical applications, that is, 5 × 4 × 1.5 mm³, were successfully grown from acetonitrile solution by a slow evaporation method. Finally, terahertz (THz) absorption was measured in these crystals, and generation of THz waves was demonstrated.