Nanostructured photoconductive terahertz detector for near-field microscopy

Oleg Mitrofanov; Robert J. Thompson; Tom Siday; Igal Brener; Ting Shan Luk; John L. Reno

doi:10.1109/IRMMW-THz.2016.7758750

Nanostructured photoconductive terahertz detector for near-field microscopy

Oleg Mitrofanov
, Robert J. Thompson
, Tom Siday
, Igal Brener
, Ting Shan Luk
, John L. Reno

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

We demonstrate that a nanostructured terahertz (THz) photoconductive detector enables sampling of THz fields localized on micrometer scale. The nanostructure, consisting of an optical nanoantenna array and a distributed Bragg reflector, acts as a hybrid cavity, which traps optical gate pulses within an optically thin photoconductive layer of the THz detector. This allows us to detect highly confined (<1 μm) evanescent THz fields. By monolithically integrating this THz detector with apertures ranging from 2 μm to 5 μm we achieve higher spatial resolution and higher sensitivity in aperture-type THz near-field microscopy and THz time-domain spectroscopy.

Original language	English
Title of host publication	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume	2016-November
DOIs	https://doi.org/10.1109/IRMMW-THz.2016.7758750
State	Published - Nov 28 2016
Externally published	Yes

Access to Document

10.1109/IRMMW-THz.2016.7758750

Cite this

@inproceedings{8a891b8852cc4bfb9bd359e43ccfa734,

title = "Nanostructured photoconductive terahertz detector for near-field microscopy",

abstract = "We demonstrate that a nanostructured terahertz (THz) photoconductive detector enables sampling of THz fields localized on micrometer scale. The nanostructure, consisting of an optical nanoantenna array and a distributed Bragg reflector, acts as a hybrid cavity, which traps optical gate pulses within an optically thin photoconductive layer of the THz detector. This allows us to detect highly confined (<1 μm) evanescent THz fields. By monolithically integrating this THz detector with apertures ranging from 2 μm to 5 μm we achieve higher spatial resolution and higher sensitivity in aperture-type THz near-field microscopy and THz time-domain spectroscopy.",

author = "Oleg Mitrofanov and Thompson, \{Robert J.\} and Tom Siday and Igal Brener and Luk, \{Ting Shan\} and Reno, \{John L.\}",

year = "2016",

month = nov,

day = "28",

doi = "10.1109/IRMMW-THz.2016.7758750",

language = "English",

isbn = "9781467384858",

volume = "2016-November",

booktitle = "International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz",

}

TY - GEN

T1 - Nanostructured photoconductive terahertz detector for near-field microscopy

AU - Mitrofanov, Oleg

AU - Thompson, Robert J.

AU - Siday, Tom

AU - Brener, Igal

AU - Luk, Ting Shan

AU - Reno, John L.

PY - 2016/11/28

Y1 - 2016/11/28

N2 - We demonstrate that a nanostructured terahertz (THz) photoconductive detector enables sampling of THz fields localized on micrometer scale. The nanostructure, consisting of an optical nanoantenna array and a distributed Bragg reflector, acts as a hybrid cavity, which traps optical gate pulses within an optically thin photoconductive layer of the THz detector. This allows us to detect highly confined (<1 μm) evanescent THz fields. By monolithically integrating this THz detector with apertures ranging from 2 μm to 5 μm we achieve higher spatial resolution and higher sensitivity in aperture-type THz near-field microscopy and THz time-domain spectroscopy.

AB - We demonstrate that a nanostructured terahertz (THz) photoconductive detector enables sampling of THz fields localized on micrometer scale. The nanostructure, consisting of an optical nanoantenna array and a distributed Bragg reflector, acts as a hybrid cavity, which traps optical gate pulses within an optically thin photoconductive layer of the THz detector. This allows us to detect highly confined (<1 μm) evanescent THz fields. By monolithically integrating this THz detector with apertures ranging from 2 μm to 5 μm we achieve higher spatial resolution and higher sensitivity in aperture-type THz near-field microscopy and THz time-domain spectroscopy.

UR - https://www.scopus.com/pages/publications/85006121082

U2 - 10.1109/IRMMW-THz.2016.7758750

DO - 10.1109/IRMMW-THz.2016.7758750

M3 - Conference contribution

SN - 9781467384858

VL - 2016-November

BT - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

ER -

Nanostructured photoconductive terahertz detector for near-field microscopy

Abstract

Access to Document

Fingerprint

Cite this