Ultrafast nonlinear effects in hydrogenated amorphous silicon wire waveguide

被引：82

作者：

Shoji, Yuya ^{[1
]}

Ogasawara, Takeshi ^{[1
]}

Kamei, Toshihiro ^{[2
]}

Sakakibara, Youichi ^{[3
]}

Suda, Satoshi ^{[1
]}

Kintaka, Kenji ^{[1
]}

Kawashima, Hitoshi ^{[1
]}

Okano, Makoto ^{[3
]}

Hasama, Toshifumi ^{[1
]}

Ishikawa, Hiroshi ^{[1
]}

Mori, Masahiko ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Network Photon Res Ctr, Tsukuba, Ibaraki 3058568, Japan

[2] Natl Inst Adv Ind Sci & Technol, Nanoelect Res Ctr, Tsukuba, Ibaraki 3058568, Japan

[3] Natl Inst Adv Ind Sci & Technol, Photon Res Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 06期

关键词：

1.55; MU-M; FEMTOSECOND PULSES; PHOTONIC WIRES; MODULATION; ABSORPTION; DEVICES; GAIN;

D O I：

10.1364/OE.18.005668

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We, for the first time, present the ultrafast optical nonlinear response of a hydrogenated amorphous silicon (a-Si:H) wire waveguide using femtosecond pulses. We show cross-phase and cross-absorption modulations measured using the heterodyne pump-probe method and estimate the optical Kerr coefficient and two-photon absorption coefficient for the amorphous silicon waveguide. The pumping energy of 0.8 eV is slightly lower than that required to achieve two-photon excitation at the band gap of a-Si:H (similar to 1.7 eV). An ultrafast response of less than 100 fs is observed, which indicates that the free-carrier effect is suppressed by the localized states in the band gap. (C) 2010 Optical Society of America

引用

页码：5668 / 5673

页数：6

共 21 条

[1] All optical switching and continuum generation in silicon waveguides [J].

Boyraz, Ö ;

Koonath, P ;

Raghunathan, V ;

Jalali, B .

OPTICS EXPRESS, 2004, 12 (17) :4094-4102

[2] Ultrafast Kerr-induced all-optical wavelength conversion in silicon waveguides using 1.55 μm femtosecond pulses [J].

Dekker, R. ;

Driessen, A. ;

Wahlbrink, T. ;

Moormann, C. ;

Niehusmann, J. ;

Foerst, M. .

OPTICS EXPRESS, 2006, 14 (18) :8336-8346

[3] Amorphous Silicon 3-D Tapers for Si Photonic Wires Fabricated With Shadow Masks [J].

Harke, Alexander ;

Lipka, Timo ;

Amthor, Julia ;

Horn, Oliver ;

Krause, Michael ;

Mueller, Joerg .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2008, 20 (17-20) :1452-1454

[4] Cross-phase modulation-induced spectral and temporal effects on co-propagating femtosecond pulses in silicon photonic wires [J].

Hsieh, I-Wei ;

Chen, Xiaogang ;

Dadap, Jerry I. ;

Panoiu, Nicolae C. ;

Osgood, Richard M., Jr. ;

McNab, Sharee J. ;

Vlasov, Yurii A. .

OPTICS EXPRESS, 2007, 15 (03) :1135-1146

[5] Enhanced optical nonlinearity in amorphous silicon and its application to waveguide devices [J].

Ikeda, Kazuhiro ;

Shen, Yaoming ;

Fainman, Yeshaiahu .

OPTICS EXPRESS, 2007, 15 (26) :17761-17771

[6] Net continuous wave optical gain in a low loss silicon-on-insulator waveguide by stimulated Raman scattering [J].

Jones, R ;

Rong, HS ;

Liu, AS ;

Fang, AW ;

Paniccia, MJ ;

Hak, D ;

Cohen, O .

OPTICS EXPRESS, 2005, 13 (02) :519-525

[7] Integrated hydrogenated amorphous Si photodiode detector for microfluidic bioanalytical devices [J].

Kamei, T ;

Paegel, BM ;

Scherer, JR ;

Skelley, AM ;

Street, RA ;

Mathies, RA .

ANALYTICAL CHEMISTRY, 2003, 75 (20) :5300-5305

[8] Deposition and extensive light soaking of highly pure hydrogenated amorphous silicon [J].

Kamei, T ;

Hata, N ;

Matsuda, A ;

Uchiyama, T ;

Amano, S ;

Tsukamoto, K ;

Yoshioka, Y ;

Hirao, T .

APPLIED PHYSICS LETTERS, 1996, 68 (17) :2380-2382

[9] Nonlinear silicon-on-insulator waveguides for all-optical signal processing [J].

Koos, C. ;

Jacome, L. ;

Poulton, C. ;

Leuthold, J. ;

Freude, W. .

OPTICS EXPRESS, 2007, 15 (10) :5976-5990

[10] Ultrafast all-optical switching by cross-absorption modulation in silicon wire waveguides [J].

Liang, TK ;

Nunes, LR ;

Sakamoto, T ;

Sasagawa, K ;

Kawanishi, T ;

Tsuchiya, M ;

Priem, GRA ;

Van Thourhout, D ;

Dumon, P ;

Baets, R ;

Tsang, HK .

OPTICS EXPRESS, 2005, 13 (19) :7298-7303

← 1 2 3 →