Wave-dispersed two-photon absorption of C-60

被引：26

作者：

Banfi, G

Fortusini, D

Bellini, M

Milani, P

机构：

[1] UNIV PAVIA,DIPARTIMENTO ELETTR,I-27100 PAVIA,ITALY

[2] EUROPEAN LAB NONLINEAR SPECT,I-50125 FLORENCE,ITALY

[3] UNIV MILAN,IST NAZL FIS MAT,I-20100 MILAN,ITALY

[4] UNIV MILAN,DIPARTIMENTO FIS,I-20100 MILAN,ITALY

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.56.R10075

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the two-photon absorption (TPA) spectrum of C-60 in the wavelength range lambda=0.7-1.5 mu m. The TPA coefficient beta of the polycrystalline film shows a broad peak, with beta approximate to 25 cm/GW, around 0.95 mu m and drops below 3 cm/GW at lambda > 1.2 mu m. We find that the nonlinear absorption, and also the sign of the nonlinear refraction above and below the TPA maximum, are satisfactorily accounted for by modeling the response with a two-photon state positioned at 2.58 eV. [S0163-1829(97)50940-4].

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页码：10075 / 10078

页数：4

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