Nonlinear refractive indices of polydiacetylene microcrystals

Hiro Matsuda; Shinji Yamada; Edward R. Van Keuren; Hideyuki Katagi; Hitoshi Kasai; Shuji Okada; Hidetoshi Oikawa; Hachiro Nakanishi; Euan C. Smith; Ajoy K. Kar; Brian S. Wherrett

doi:10.1117/12.264187

Nonlinear refractive indices of polydiacetylene microcrystals

Hiro Matsuda, Shinji Yamada, Edward R. Van Keuren, Hideyuki Katagi, Hitoshi Kasai, Shuji Okada, Hidetoshi Oikawa, Hachiro Nakanishi, Euan C. Smith, Ajoy K. Kar, Brian S. Wherrett

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

Polydiacetylene microcrystals in a water suspension or a polymer matrix were prepared by a simple precipitation procedure in order to obtain a thin samples with good optical quality maintaining the characteristics of crystalline materials. The nonlinear refraction, n₂, and nonlinear absorption, ß, around the exciton peak were measured by z-scan method using a tunable picosecond laser. The signs of the n₂ are positive/negative at wavelengths shorter/longer than the exciton peak and strong saturable absorption, which ß is negative, are observed around the peak. The largest n₂ was obtained to be plus 0.024 cm²/GW (Re _?⁽³⁾ = +1.4 × 10^-9 esu) at 640 nm for a gelatin composite film containing 24 wt percent of polydiacetylene microcrystals. ©2005 Copyright SPIE - The International Society for Optical Engineering.

Original language	English
Pages (from-to)	241-248
Number of pages	8
Journal	Proceedings of SPIE - the International Society for Optical Engineering
Volume	2998
DOIs	https://doi.org/10.1117/12.264187
Publication status	Published - 1997
Event	Photosensitive Optical Materials and Devices - San Jose, CA, United States Duration: 12 Feb 1997 → 12 Feb 1997

Keywords

Nonlinear absorption
Nonlinear refractive index
Organic microcrystal
Polydiacetylene
Z-scan method

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Matsuda, Hiro ; Yamada, Shinji ; Van Keuren, Edward R. ; Katagi, Hideyuki ; Kasai, Hitoshi ; Okada, Shuji ; Oikawa, Hidetoshi ; Nakanishi, Hachiro ; Smith, Euan C. ; Kar, Ajoy K. ; Wherrett, Brian S. / Nonlinear refractive indices of polydiacetylene microcrystals. In: Proceedings of SPIE - the International Society for Optical Engineering. 1997 ; Vol. 2998. pp. 241-248.

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title = "Nonlinear refractive indices of polydiacetylene microcrystals",

abstract = "Polydiacetylene microcrystals in a water suspension or a polymer matrix were prepared by a simple precipitation procedure in order to obtain a thin samples with good optical quality maintaining the characteristics of crystalline materials. The nonlinear refraction, n2, and nonlinear absorption, {\ss}, around the exciton peak were measured by z-scan method using a tunable picosecond laser. The signs of the n2 are positive/negative at wavelengths shorter/longer than the exciton peak and strong saturable absorption, which {\ss} is negative, are observed around the peak. The largest n2 was obtained to be plus 0.024 cm2/GW (Re ?(3) = +1.4 × 10-9 esu) at 640 nm for a gelatin composite film containing 24 wt percent of polydiacetylene microcrystals. {\textcopyright}2005 Copyright SPIE - The International Society for Optical Engineering.",

keywords = "Nonlinear absorption, Nonlinear refractive index, Organic microcrystal, Polydiacetylene, Z-scan method",

author = "Hiro Matsuda and Shinji Yamada and {Van Keuren}, {Edward R.} and Hideyuki Katagi and Hitoshi Kasai and Shuji Okada and Hidetoshi Oikawa and Hachiro Nakanishi and Smith, {Euan C.} and Kar, {Ajoy K.} and Wherrett, {Brian S.}",

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language = "English",

volume = "2998",

pages = "241--248",

journal = "Proceedings of SPIE - the International Society for Optical Engineering",

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note = "Photosensitive Optical Materials and Devices ; Conference date: 12-02-1997 Through 12-02-1997",

}

Nonlinear refractive indices of polydiacetylene microcrystals. / Matsuda, Hiro; Yamada, Shinji; Van Keuren, Edward R.; Katagi, Hideyuki; Kasai, Hitoshi; Okada, Shuji; Oikawa, Hidetoshi; Nakanishi, Hachiro; Smith, Euan C.; Kar, Ajoy K.; Wherrett, Brian S.

In: Proceedings of SPIE - the International Society for Optical Engineering, Vol. 2998, 1997, p. 241-248.

Research output: Contribution to journal › Article

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AU - Matsuda, Hiro

AU - Yamada, Shinji

AU - Van Keuren, Edward R.

AU - Katagi, Hideyuki

AU - Kasai, Hitoshi

AU - Okada, Shuji

AU - Oikawa, Hidetoshi

AU - Nakanishi, Hachiro

AU - Smith, Euan C.

AU - Kar, Ajoy K.

AU - Wherrett, Brian S.

PY - 1997

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