Surface plasmon enhanced THz emission with nanoporous gold supported CdTe

LUYI HUANG; LING ZHANG; JUNJIE ZHOU; MIN LI; CHUANG LI; CHUANQI LI; JINGQUAN ZHANG; SHENGHAO WANG; HEPING ZENG

doi:10.1364/OE.424230

Surface plasmon enhanced THz emission with nanoporous gold supported CdTe

LUYI HUANG, LING ZHANG, JUNJIE ZHOU, MIN LI, CHUANG LI, CHUANQI LI, JINGQUAN ZHANG, SHENGHAO WANG, HEPING ZENG

Institute for Advanced Study in Precision Spectroscopy

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

2 Scopus citations

Abstract

Terahertz emission by ultrafast excitation of semiconductor/metal interfaces was found strongly enhanced by plasmon resonance. Here, a three-dimensional nanoporous gold (NPG) was used to form semiconductor/metal compound with cadmium telluride (CdTe). We investigated the specific impact of surface plasmon from randomly nanoporous structure in the ultrafast optoelectronic response for THz generation, and observed a THz amplitude enhancement around an order of magnitude from CdTe on NPG compared to that from CdTe on silicon. Moreover, the plasmon enhancement for THz emission from NPG is stronger than that from gold film, indicating that randomly nanoporous structure is also effective for plasmonic enhancement in THz band.

Original language	English
Pages (from-to)	19853-19861
Number of pages	9
Journal	Optics Express
Volume	29
Issue number	13
DOIs	https://doi.org/10.1364/OE.424230
State	Published - 21 Jun 2021

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title = "Surface plasmon enhanced THz emission with nanoporous gold supported CdTe",

abstract = "Terahertz emission by ultrafast excitation of semiconductor/metal interfaces was found strongly enhanced by plasmon resonance. Here, a three-dimensional nanoporous gold (NPG) was used to form semiconductor/metal compound with cadmium telluride (CdTe). We investigated the specific impact of surface plasmon from randomly nanoporous structure in the ultrafast optoelectronic response for THz generation, and observed a THz amplitude enhancement around an order of magnitude from CdTe on NPG compared to that from CdTe on silicon. Moreover, the plasmon enhancement for THz emission from NPG is stronger than that from gold film, indicating that randomly nanoporous structure is also effective for plasmonic enhancement in THz band.",

author = "LUYI HUANG and LING ZHANG and JUNJIE ZHOU and MIN LI and CHUANG LI and CHUANQI LI and JINGQUAN ZHANG and SHENGHAO WANG and HEPING ZENG",

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AU - HUANG, LUYI

AU - ZHANG, LING

AU - ZHOU, JUNJIE

AU - LI, MIN

AU - LI, CHUANG

AU - LI, CHUANQI

AU - ZHANG, JINGQUAN

AU - WANG, SHENGHAO

AU - ZENG, HEPING

PY - 2021/6/21

Y1 - 2021/6/21

N2 - Terahertz emission by ultrafast excitation of semiconductor/metal interfaces was found strongly enhanced by plasmon resonance. Here, a three-dimensional nanoporous gold (NPG) was used to form semiconductor/metal compound with cadmium telluride (CdTe). We investigated the specific impact of surface plasmon from randomly nanoporous structure in the ultrafast optoelectronic response for THz generation, and observed a THz amplitude enhancement around an order of magnitude from CdTe on NPG compared to that from CdTe on silicon. Moreover, the plasmon enhancement for THz emission from NPG is stronger than that from gold film, indicating that randomly nanoporous structure is also effective for plasmonic enhancement in THz band.

AB - Terahertz emission by ultrafast excitation of semiconductor/metal interfaces was found strongly enhanced by plasmon resonance. Here, a three-dimensional nanoporous gold (NPG) was used to form semiconductor/metal compound with cadmium telluride (CdTe). We investigated the specific impact of surface plasmon from randomly nanoporous structure in the ultrafast optoelectronic response for THz generation, and observed a THz amplitude enhancement around an order of magnitude from CdTe on NPG compared to that from CdTe on silicon. Moreover, the plasmon enhancement for THz emission from NPG is stronger than that from gold film, indicating that randomly nanoporous structure is also effective for plasmonic enhancement in THz band.

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JO - Optics Express

JF - Optics Express

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ER -

Surface plasmon enhanced THz emission with nanoporous gold supported CdTe

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