Simulation of photodetection using finite-difference time-domain method with application to near-field subwavelength imaging based on nanoscale semiconductor photodetector array

Ki Young Kim; Boyang Liu; Yingyan Huang; Seng Tiong Ho

doi:10.1007/s11082-008-9190-0

Simulation of photodetection using finite-difference time-domain method with application to near-field subwavelength imaging based on nanoscale semiconductor photodetector array

Ki Young Kim, Boyang Liu, Yingyan Huang, Seng Tiong Ho

Electrical and Computer Engineering

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

4 Scopus citations

Abstract

Simulation of detecting photoelectrons using multi-level multi-electron (MLME) finite-difference time-domain (FDTD) method with an application to near-field subwavelength imaging based on semiconductor nanophotodetector (NPD) array is reported. The photocurrents from the photodiode pixels are obtained to explore the resolution of this novel NPD device for subwavelength imaging. One limiting factor of the NPD device is the optical power coupling between adjacent detector pixels. We investigate such power coupling in the presence of absorbing media as well as the spatial distributions of the electric field and photoelectron density using the MLME FDTD simulation. Our results show that the detection resolution is about one tenth of the operating wavelength, which is comparable to that of a near-field scanning optical microscope based on metal clad tapered fiber.

Original language	English (US)
Pages (from-to)	343-347
Number of pages	5
Journal	Optical and Quantum Electronics
Volume	40
Issue number	5-6
DOIs	https://doi.org/10.1007/s11082-008-9190-0
State	Published - Apr 2008

Keywords

FDTD simulation
Nanoscale photodetector (NPD) array
Photocurrent
Subwavelength resolution

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Access to Document

10.1007/s11082-008-9190-0

Cite this

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title = "Simulation of photodetection using finite-difference time-domain method with application to near-field subwavelength imaging based on nanoscale semiconductor photodetector array",

abstract = "Simulation of detecting photoelectrons using multi-level multi-electron (MLME) finite-difference time-domain (FDTD) method with an application to near-field subwavelength imaging based on semiconductor nanophotodetector (NPD) array is reported. The photocurrents from the photodiode pixels are obtained to explore the resolution of this novel NPD device for subwavelength imaging. One limiting factor of the NPD device is the optical power coupling between adjacent detector pixels. We investigate such power coupling in the presence of absorbing media as well as the spatial distributions of the electric field and photoelectron density using the MLME FDTD simulation. Our results show that the detection resolution is about one tenth of the operating wavelength, which is comparable to that of a near-field scanning optical microscope based on metal clad tapered fiber.",

keywords = "FDTD simulation, Nanoscale photodetector (NPD) array, Photocurrent, Subwavelength resolution",

author = "Kim, {Ki Young} and Boyang Liu and Yingyan Huang and Ho, {Seng Tiong}",

note = "Funding Information: Nanoelectronics and Computing under Award No. NCC 2-1363. This work was also supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00064). Funding Information: Acknowledgements This work was supported by NSF under Award No. ECS-0501589 and ECCS 0622185, by NSF MRSEC program under grant DMR-0076097, by the National Center for Learning & Teaching in Nanoscale Science and Engineering (NCLT) under the NSF Grant No. 0426328, and by the NASA Institute for",

year = "2008",

month = apr,

doi = "10.1007/s11082-008-9190-0",

language = "English (US)",

volume = "40",

pages = "343--347",

journal = "Optical and Quantum Electronics",

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publisher = "Springer New York",

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Simulation of photodetection using finite-difference time-domain method with application to near-field subwavelength imaging based on nanoscale semiconductor photodetector array. / Kim, Ki Young; Liu, Boyang; Huang, Yingyan et al.
In: Optical and Quantum Electronics, Vol. 40, No. 5-6, 04.2008, p. 343-347.

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

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AU - Kim, Ki Young

AU - Liu, Boyang

AU - Huang, Yingyan

AU - Ho, Seng Tiong

N1 - Funding Information: Nanoelectronics and Computing under Award No. NCC 2-1363. This work was also supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00064). Funding Information: Acknowledgements This work was supported by NSF under Award No. ECS-0501589 and ECCS 0622185, by NSF MRSEC program under grant DMR-0076097, by the National Center for Learning & Teaching in Nanoscale Science and Engineering (NCLT) under the NSF Grant No. 0426328, and by the NASA Institute for

PY - 2008/4

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N2 - Simulation of detecting photoelectrons using multi-level multi-electron (MLME) finite-difference time-domain (FDTD) method with an application to near-field subwavelength imaging based on semiconductor nanophotodetector (NPD) array is reported. The photocurrents from the photodiode pixels are obtained to explore the resolution of this novel NPD device for subwavelength imaging. One limiting factor of the NPD device is the optical power coupling between adjacent detector pixels. We investigate such power coupling in the presence of absorbing media as well as the spatial distributions of the electric field and photoelectron density using the MLME FDTD simulation. Our results show that the detection resolution is about one tenth of the operating wavelength, which is comparable to that of a near-field scanning optical microscope based on metal clad tapered fiber.

AB - Simulation of detecting photoelectrons using multi-level multi-electron (MLME) finite-difference time-domain (FDTD) method with an application to near-field subwavelength imaging based on semiconductor nanophotodetector (NPD) array is reported. The photocurrents from the photodiode pixels are obtained to explore the resolution of this novel NPD device for subwavelength imaging. One limiting factor of the NPD device is the optical power coupling between adjacent detector pixels. We investigate such power coupling in the presence of absorbing media as well as the spatial distributions of the electric field and photoelectron density using the MLME FDTD simulation. Our results show that the detection resolution is about one tenth of the operating wavelength, which is comparable to that of a near-field scanning optical microscope based on metal clad tapered fiber.

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KW - Subwavelength resolution

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Simulation of photodetection using finite-difference time-domain method with application to near-field subwavelength imaging based on nanoscale semiconductor photodetector array

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Keywords

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