Second harmonic generation in the binary system of π-conjugated compounds

A large second harmonic generation (SHG) intensity, which was 60 times as large as that of urea was observed in a p-nitroaniline(PNA)/N-(p-nitrophenyl)ethylenediamine (NPEN) system. This SHG intensity was related to the cooling rate for solidification. The optimum cooling rate for SHG intensity was...

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Veröffentlicht in:	Journal of applied physics 1991, Vol.69 (1), p.545-547
Hauptverfasser:	WAKITA, K, SONODA, N, SHIMIZU, T, KAIDA, S
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Physics
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Zusammenfassung:	A large second harmonic generation (SHG) intensity, which was 60 times as large as that of urea was observed in a p-nitroaniline(PNA)/N-(p-nitrophenyl)ethylenediamine (NPEN) system. This SHG intensity was related to the cooling rate for solidification. The optimum cooling rate for SHG intensity was in the range of 2–10 °C/s. X-ray and thermal analysis done for this new system show that the hydrogen bond and the unique nonplanar structure of NPEN play an important role for SHG and its stability.
ISSN:	0021-8979 1089-7550
DOI:	10.1063/1.347652