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: Chapter in Book/Report/Conference proceeding › Conference contribution

24 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.

Original language	English
Title of host publication	Photosensitive Optical Materials and Devices
Publisher	SPIE
Pages	241-248
Number of pages	8
ISBN (Print)	0-8194-2409-9
DOIs	https://doi.org/10.1117/12.264187
Publication status	Published - 23 Jan 1997
Event	Photonics West '97 - San Jose, United States Duration: 12 Feb 1997 → 14 Feb 1997

Publication series

Name	Proceedings of SPIE
Volume	2998
ISSN (Print)	1996-756X

Conference

Conference	Photonics West '97
Country/Territory	United States
City	San Jose
Period	12/02/97 → 14/02/97

Keywords

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

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10.1117/12.264187

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@inproceedings{a7a6d93ddc4f4fd0a8a56f185f576aba,

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.",

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.}",

year = "1997",

month = jan,

day = "23",

doi = "10.1117/12.264187",

language = "English",

isbn = "0-8194-2409-9",

series = "Proceedings of SPIE",

publisher = "SPIE",

pages = "241--248",

booktitle = "Photosensitive Optical Materials and Devices",

address = "United States",

note = "Photonics West '97 ; Conference date: 12-02-1997 Through 14-02-1997",

}

Matsuda, H, Yamada, S, Van Keuren, ER, Katagi, H, Kasai, H, Okada, S, Oikawa, H, Nakanishi, H, Smith, EC, Kar, AK & Wherrett, BS 1997, Nonlinear refractive indices of polydiacetylene microcrystals. in Photosensitive Optical Materials and Devices. Proceedings of SPIE, vol. 2998, SPIE, pp. 241-248, Photonics West '97, San Jose, California, United States, 12/02/97. https://doi.org/10.1117/12.264187

TY - GEN

T1 - Nonlinear refractive indices of polydiacetylene microcrystals

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 - 1997/1/23

Y1 - 1997/1/23

N2 - 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.

AB - 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.

KW - Nonlinear absorption

KW - Nonlinear refractive index

KW - Organic microcrystal

KW - Polydiacetylene

KW - Z-scan method

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U2 - 10.1117/12.264187

DO - 10.1117/12.264187

M3 - Conference contribution

SN - 0-8194-2409-9

T3 - Proceedings of SPIE

SP - 241

EP - 248

BT - Photosensitive Optical Materials and Devices

PB - SPIE

T2 - Photonics West '97

Y2 - 12 February 1997 through 14 February 1997

ER -

Nonlinear refractive indices of polydiacetylene microcrystals

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