Plasmonics-enhanced photoconductive terahertz detector pumped by Ytterbium-doped fiber laser
Abstract
We present a photoconductive terahertz detector operating at the 1 µm wavelength range at which high-power and compact Ytterbium-doped femtosecond fiber lasers are available. The detector utilizes an array of plasmonic nanoantennas to provide sub-picosecond transit time for the majority of photo-generated carriers to enable high-sensitivity terahertz detection without using a short-carrier-lifetime substrate. By using a high-mobility semiconductor substrate and preventing photocarrier recombination, the presented detector offers significantly higher sensitivity levels compared with previously demonstrated broadband photoconductive terahertz detectors operating at the 1 µm wavelength range. We demonstrate pulsed terahertz detection over a 4 THz bandwidth with a record-high signal-to-noise ratio of 95 dB at an average terahertz radiation power of 6.8 µW, when using an optical pump power of 30 mW.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of California, Los Angeles, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1595491
- Alternate Identifier(s):
- OSTI ID: 1803095
- Grant/Contract Number:
- SC0016925
- Resource Type:
- Published Article
- Journal Name:
- Optics Express
- Additional Journal Information:
- Journal Name: Optics Express Journal Volume: 28 Journal Issue: 3; Journal ID: ISSN 1094-4087
- Publisher:
- Optical Society of America
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Optics
Citation Formats
Turan, Deniz, Yardimci, Nezih Tolga, and Jarrahi, Mona. Plasmonics-enhanced photoconductive terahertz detector pumped by Ytterbium-doped fiber laser. United States: N. p., 2020.
Web. doi:10.1364/OE.386368.
Turan, Deniz, Yardimci, Nezih Tolga, & Jarrahi, Mona. Plasmonics-enhanced photoconductive terahertz detector pumped by Ytterbium-doped fiber laser. United States. https://doi.org/10.1364/OE.386368
Turan, Deniz, Yardimci, Nezih Tolga, and Jarrahi, Mona. Mon .
"Plasmonics-enhanced photoconductive terahertz detector pumped by Ytterbium-doped fiber laser". United States. https://doi.org/10.1364/OE.386368.
@article{osti_1595491,
title = {Plasmonics-enhanced photoconductive terahertz detector pumped by Ytterbium-doped fiber laser},
author = {Turan, Deniz and Yardimci, Nezih Tolga and Jarrahi, Mona},
abstractNote = {We present a photoconductive terahertz detector operating at the 1 µm wavelength range at which high-power and compact Ytterbium-doped femtosecond fiber lasers are available. The detector utilizes an array of plasmonic nanoantennas to provide sub-picosecond transit time for the majority of photo-generated carriers to enable high-sensitivity terahertz detection without using a short-carrier-lifetime substrate. By using a high-mobility semiconductor substrate and preventing photocarrier recombination, the presented detector offers significantly higher sensitivity levels compared with previously demonstrated broadband photoconductive terahertz detectors operating at the 1 µm wavelength range. We demonstrate pulsed terahertz detection over a 4 THz bandwidth with a record-high signal-to-noise ratio of 95 dB at an average terahertz radiation power of 6.8 µW, when using an optical pump power of 30 mW.},
doi = {10.1364/OE.386368},
journal = {Optics Express},
number = 3,
volume = 28,
place = {United States},
year = {2020},
month = {1}
}
https://doi.org/10.1364/OE.386368
Web of Science
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