Nonlinear Optical Property of Aligned Multi-Walled Carbon Nanotube Film

Tiejun Zhang, Zexiang Chen, B. Tang
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引用次数: 3

Abstract

the nonlinear optical properties of aligned multiwalled carbon nanotubes (MWCNTS) are studied. Measured photoluminescence spectrum of MWCNTs film reveals that there are two emission peaks at 450 nm and 470 nm while MWCNTs are excited by 675 nm photons and 704 nm photons respectively. The MWCNTs absorption spectrum indicated that there are a peak point at 450 nm and a valley bottom at 470 nm. An energy model was proposed to explain the MWCNT multi-photon absorption reasonably: Three-photon absorption of 675 nm photons would lead to 450 nm photons emission while two-photon absorption of 704 nm would excite 470 nm photons. Keywords-MWCNTs; photoluminescence spectrum; absorption spectrum; energy model; multi-photon absorption
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排列多壁碳纳米管薄膜的非线性光学性质
研究了排列多壁碳纳米管(MWCNTS)的非线性光学性质。MWCNTs薄膜的光致发光光谱测量表明,当MWCNTs分别被675 nm和704 nm的光子激发时,在450 nm和470 nm处存在两个发射峰。MWCNTs的吸收光谱表明,在450nm处有一个峰点,在470nm处有一个谷底。提出了一个合理解释MWCNT多光子吸收的能量模型:675 nm的三光子吸收会导致450 nm的光子发射,而704 nm的双光子吸收会激发470 nm的光子。Keywords-MWCNTs;光致发光光谱;吸收光谱;能量模型;多光子吸收
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