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The triangular Au nanoparticle array of size 37 nm was fabricated on a quartz substrate using nanosphere lithography. By performing the Z-scan method with femtosecond laser (800 nm, 50 fs), the optical nonlinearity of the Au nanoparticle array was determined. The results showed an intensity-related two-photon absorption saturation processes. As the excitation intensity increases, the nonlinear absorption changes from two-photon absorption to saturated absorption, while the nonlinear refraction exhibits self-defocusing effect. The one- and two-photon figures of merit, W=7.5 and T=0.12, were obtained, validating a high efficiency nonlinear material for all-optical switching.
[1] Hong X, Du D D, Qiu Z R, Zhang G X 2007 Acta Phys. Sin. 56 7219 (in Chinese) [洪 昕、张国雄 2007 56 7219]
[2] Zhu B H, Wang F F, Qian S X 2008 Acta Phys. Sin. 57 3085 (in Chinese) [朱宝华、钱士雄 2008 57 3085]
[3] Gong Z Q, Liu J Q 2010 Chin. Phys. B 19 067303
[4] Polavarapu L, Xu Q H, Ji W 2008 Appli. Phys. Lett. 92 263110
[5] Seo J T, Yang Q G, Temple D 2009 Opt. Lett. 34 307
[6] Larson D R, Zipfel W R, Webb W W 2003 Science 300 1434
[7] Samoc A, Samoc M, Luther-Davies B 1995 Opt. Lett. 20 1241
[8] Wang Q Q, Han J B, Ren J J 2006 Adv. Func. Mat. 16 2405
[9] Kamaraju N, Kumar S, Sood A K 2008 Appl. Phys. Lett. 93 091903
[10] Kamaraju N, Kumar S, Sood A K 2009 Appl. Phys. Lett. 95 081106
[11] Pan H, Chen W Z, Ji W 2006 Appli. Phys. Lett. 88 223106
[12] Lee Y H, Yan Y L, Xu Q H 2009 Appli. Phys. Lett. 95 203105
[13] Wang K, Long H, Lu P X 2010 Opt. Lett. 35 1560
[14] Xenogiannopoulou E, Iliopoulos K, Couris S 2008 Adv. Func. Mater. 18 1281
[15] Boni L D, Wood E L, Hernandez F E 2008 Plasmonics 3 171
[16] Yang G, Wang W T, Chen Z H 2002 Appl. Phys. Lett. 81 3969
[17] Yang W H, Schatz G C, Van Duyne R P 1995 Chem. Phys. 103 869
[18] Jensen T R, Schatz G C, Van Duyne R P 1999 J. Phys. Chem. B 103 2394
[19] Rybczynski J, Ebels U, Giersig M 2003 Colloids and Surfaces A 219 1
[20] Yang G, Chen Z H, 2006 Acta Phys. Sin. 55 4342 (in Chinese) [杨 光、陈正豪 2006 55 4342]
[21] Sheik-Bahae M, Said A A, Van Stryland E W 1990 IEEE J. Quantum Electron. 26 760
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[1] Hong X, Du D D, Qiu Z R, Zhang G X 2007 Acta Phys. Sin. 56 7219 (in Chinese) [洪 昕、张国雄 2007 56 7219]
[2] Zhu B H, Wang F F, Qian S X 2008 Acta Phys. Sin. 57 3085 (in Chinese) [朱宝华、钱士雄 2008 57 3085]
[3] Gong Z Q, Liu J Q 2010 Chin. Phys. B 19 067303
[4] Polavarapu L, Xu Q H, Ji W 2008 Appli. Phys. Lett. 92 263110
[5] Seo J T, Yang Q G, Temple D 2009 Opt. Lett. 34 307
[6] Larson D R, Zipfel W R, Webb W W 2003 Science 300 1434
[7] Samoc A, Samoc M, Luther-Davies B 1995 Opt. Lett. 20 1241
[8] Wang Q Q, Han J B, Ren J J 2006 Adv. Func. Mat. 16 2405
[9] Kamaraju N, Kumar S, Sood A K 2008 Appl. Phys. Lett. 93 091903
[10] Kamaraju N, Kumar S, Sood A K 2009 Appl. Phys. Lett. 95 081106
[11] Pan H, Chen W Z, Ji W 2006 Appli. Phys. Lett. 88 223106
[12] Lee Y H, Yan Y L, Xu Q H 2009 Appli. Phys. Lett. 95 203105
[13] Wang K, Long H, Lu P X 2010 Opt. Lett. 35 1560
[14] Xenogiannopoulou E, Iliopoulos K, Couris S 2008 Adv. Func. Mater. 18 1281
[15] Boni L D, Wood E L, Hernandez F E 2008 Plasmonics 3 171
[16] Yang G, Wang W T, Chen Z H 2002 Appl. Phys. Lett. 81 3969
[17] Yang W H, Schatz G C, Van Duyne R P 1995 Chem. Phys. 103 869
[18] Jensen T R, Schatz G C, Van Duyne R P 1999 J. Phys. Chem. B 103 2394
[19] Rybczynski J, Ebels U, Giersig M 2003 Colloids and Surfaces A 219 1
[20] Yang G, Chen Z H, 2006 Acta Phys. Sin. 55 4342 (in Chinese) [杨 光、陈正豪 2006 55 4342]
[21] Sheik-Bahae M, Said A A, Van Stryland E W 1990 IEEE J. Quantum Electron. 26 760
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