Second harmonic generation in binary systems of pi-conjugated compounds

Katsuya Wakita; Nobuo Sonoda; Tokihiko Shimizu; Satoshi Kaida

doi:10.1117/12.22958

1 December 1990 Second harmonic generation in binary systems of pi-conjugated compounds

Katsuya Wakita, Nobuo Sonoda, Tokihiko Shimizu, Satoshi Kaida

Proceedings Volume 1337, Nonlinear Optical Properties of Organic Materials III; (1990) https://doi.org/10.1117/12.22958
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

A large Second Harmonic Generation (SHG) intensity which was 60 times as large as that of urea was observed in p-nitroaniline (PNA) I N-(p--nitrophenyl)ethylenediamine (NPEN) system. Results of X-ray and Scanning Electron Microscopy (SEM) analysis showed the new crystal structure. And this SHG intensity was related to cooling rate for solidification. The optimum cooling rate was in the range of 2°C/sec to 10°C/sec. Moreover, results of X-ray analysis and SHG measurements of similar binary systems showed that hydrogen bond and unique non- planar structure of NPEN played an important role for SHG and its stability.

Citation Download Citation

Katsuya Wakita, Nobuo Sonoda, Tokihiko Shimizu, and Satoshi Kaida "Second harmonic generation in binary systems of pi-conjugated compounds", Proc. SPIE 1337, Nonlinear Optical Properties of Organic Materials III, (1 December 1990); https://doi.org/10.1117/12.22958

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