Two-photon absorption of matrix-free Ge nanocrystals

被引：13

作者：

Gerung, Henry ^{[1
]}

Zhao, Yanrui

Wang, Li

Jain, Ravinder K.

Boyle, Timothy J.

Brinker, C. Jeffrey

Han, Sang M.

机构：

[1] Univ New Mexico, Dept Chem & Nucl Engn, Farris Engn Ctr 209, Albuquerque, NM 87131 USA

[2] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA

[3] Sandia Natl Labs, Adv Mat Labs, Albuquerque, NM 87106 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2352711

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors demonstrate that solution synthesized Ge nanocrystals (NCs) display a highly nonlinear optical absorption. The Ge NCs with an average diameter of 5 +/- 2 nm are synthesized from germanium(II) bis(trimethylsilyl)amide with hexadecylamine surfactants at 300 degrees C and 1 atm in argon atmosphere. The resulting Ge NCs in a powder form are then dispersed on a silica glass substrate. Femtosecond pulses at 820 nm wavelength from a mode-locked Ti:sapphire laser are used to measure a two-photon absorption coefficient of the deposited Ge NCs. The calculated coefficient ranges from 1190 to 1940 cm/GW. (c) 2006 American Institute of Physics.

引用

页数：3

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