Multiphoton absorption induced amplified spontaneous emission from biocatalyst-synthesized ZnO nanorods

Chunfeng Zhang; Fan Zhang; Shixiong Qian; Nitin Kumar; Jong In Hahm; Jian Xu

doi:10.1063/1.2927486

Multiphoton absorption induced amplified spontaneous emission from biocatalyst-synthesized ZnO nanorods

Chunfeng Zhang, Fan Zhang, Shixiong Qian, Nitin Kumar, Jong In Hahm, Jian Xu

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Multiphoton absorption-induced photoluminescence and amplified spontaneous emission (ASE) have been observed from ZnO nanorod arrays upon near-infrared excitation (λ_exc ∼800 nm). A low threshold of ∼12 mJ/cm² was demonstrated for the ASE process. The ultraviolet emission can be attributed to the recombination of carriers coexcited by the processes of three-photon and off-resonant two-photon absorption, which was confirmed by the excitation wavelength-dependent experiments. Additionally, it has been observed that the processes of ASE and second harmonic generation in ZnO nanorods appear to enhance each other when the excitation wavelength approaches the resonant wavelength for two-photon absorption.

Original language	English (US)
Article number	233116
Journal	Applied Physics Letters
Volume	92
Issue number	23
DOIs	https://doi.org/10.1063/1.2927486
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2927486

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title = "Multiphoton absorption induced amplified spontaneous emission from biocatalyst-synthesized ZnO nanorods",

abstract = "Multiphoton absorption-induced photoluminescence and amplified spontaneous emission (ASE) have been observed from ZnO nanorod arrays upon near-infrared excitation (λexc ∼800 nm). A low threshold of ∼12 mJ/cm2 was demonstrated for the ASE process. The ultraviolet emission can be attributed to the recombination of carriers coexcited by the processes of three-photon and off-resonant two-photon absorption, which was confirmed by the excitation wavelength-dependent experiments. Additionally, it has been observed that the processes of ASE and second harmonic generation in ZnO nanorods appear to enhance each other when the excitation wavelength approaches the resonant wavelength for two-photon absorption.",

author = "Chunfeng Zhang and Fan Zhang and Shixiong Qian and Nitin Kumar and Hahm, {Jong In} and Jian Xu",

note = "Funding Information: The work at the Penn State University is being supported by the Army Research Office under Grant No. DAAD19-02-D-0001, and that at Fudan University is supported by the National Science Foundation under Grant No. 10674031. Xu is grateful to the helpful discussion with Dr. James Foley at The Rowland Institute at Harvard.",

year = "2008",

doi = "10.1063/1.2927486",

language = "English (US)",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Multiphoton absorption induced amplified spontaneous emission from biocatalyst-synthesized ZnO nanorods

AU - Zhang, Chunfeng

AU - Zhang, Fan

AU - Qian, Shixiong

AU - Kumar, Nitin

AU - Hahm, Jong In

AU - Xu, Jian

N1 - Funding Information: The work at the Penn State University is being supported by the Army Research Office under Grant No. DAAD19-02-D-0001, and that at Fudan University is supported by the National Science Foundation under Grant No. 10674031. Xu is grateful to the helpful discussion with Dr. James Foley at The Rowland Institute at Harvard.

PY - 2008

Y1 - 2008

N2 - Multiphoton absorption-induced photoluminescence and amplified spontaneous emission (ASE) have been observed from ZnO nanorod arrays upon near-infrared excitation (λexc ∼800 nm). A low threshold of ∼12 mJ/cm2 was demonstrated for the ASE process. The ultraviolet emission can be attributed to the recombination of carriers coexcited by the processes of three-photon and off-resonant two-photon absorption, which was confirmed by the excitation wavelength-dependent experiments. Additionally, it has been observed that the processes of ASE and second harmonic generation in ZnO nanorods appear to enhance each other when the excitation wavelength approaches the resonant wavelength for two-photon absorption.

AB - Multiphoton absorption-induced photoluminescence and amplified spontaneous emission (ASE) have been observed from ZnO nanorod arrays upon near-infrared excitation (λexc ∼800 nm). A low threshold of ∼12 mJ/cm2 was demonstrated for the ASE process. The ultraviolet emission can be attributed to the recombination of carriers coexcited by the processes of three-photon and off-resonant two-photon absorption, which was confirmed by the excitation wavelength-dependent experiments. Additionally, it has been observed that the processes of ASE and second harmonic generation in ZnO nanorods appear to enhance each other when the excitation wavelength approaches the resonant wavelength for two-photon absorption.

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JF - Applied Physics Letters

IS - 23

M1 - 233116

ER -

Multiphoton absorption induced amplified spontaneous emission from biocatalyst-synthesized ZnO nanorods

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