Terahertz radiation from a photoconducting antenna array
Abstract
An array of photoconducting antennas which generates electrically controllable millimeter-wave and submillimeter-wave radiation in free space is described. Under quasi-sinusoidal optical illumination, the emitted radiation is directional and electrically steerable, and can be scanned through an angle of over 40 degrees . The center of the scanning range can be adjusted by changing the angle of incidence of the pump beam. The far-field radiation pattern of the array is measured and discussed. Also, some properties of the array under illumination by a short optical pulse are demonstrated. These include electrical control of the frequency content of the signal and mapping of the spatial profile of the applied electric field onto the radiated waveform. The latter property can be used to multiplex information presented in parallel into a train of radiated pulses with a bit spacing of 6 ps.>
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Multi-cycle THz pulses can be obtained from optical rectification, photoconductive antenna arrays, quantum cascade lasers, or free-electron lasers.
“Multi-cycle THz pulses can be obtained from optical rectification [19], photoconductive antenna arrays [20, 21], quantum cascade lasers [22], or free-electron lasers [23, 24].”
From A Tutorial on THz Pulse Analysis: Accurate Retrieval of Pulse Arrival Times, Spectral Energy Density and Absolute Spectral Phase (2025) · cites this paper as [20]
Cites
Subpicosecond photoconducting dipole antennas
Smith, P. R., Auston, D. H., & Nuss, M. C. (1988) · IEEE Journal of Quantum Electronics · doi:10.1109/3.121 · Cited by 805 · see citing works
Self-citationCharacterization of an optoelectronic terahertz beam system
van Exter, M., & Grischkowsky, D. R. (1990) · IEEE Transactions on Microwave Theory and Techniques · doi:10.1109/22.60016 · Cited by 486 · see citing works
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Lloyd-Hughes, J., Chopra, N., Deveikis, J., Pandya, R., & Woolley, J. (2025) · Journal of Infrared, Millimeter, and Terahertz Waves · doi:10.1007/s10762-025-01052-w · Cited by 6 · see citing works
“Multi-cycle THz pulses can be obtained from optical rectification [19], photoconductive antenna arrays [20,21], quantum cascade lasers [22], or free electron lasers [23,24].”
- Authors
- Froberg, N. M., Hu, B. B., Zhang, X.-C., & Auston, D. H.
- Affiliations
- Columbia University (US)
- ORCID
- Bin Bin Hu
- Venue
- IEEE Journal of Quantum Electronics
- Published
- 1992
- Volume
- 28
- Issue
- 10
- Pages
- 2291-2301
- ISSN
- 0018-9197 (ISSN-L)
- OpenAlex
- W2073813552
- Cited by
- 73
- References
- 2
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 1 · 2023: 1 · 2021: 3 · 2019: 3 · 2018: 1 · 2017: 3 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 4
- FWCI
- 2.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE Journal of Quantum Electronics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Superconducting and THz Device Technology
- Physical Sciences › Engineering › Aerospace Engineering › Antenna Design and Analysis
- Keywords
- terahertz radiation, millimeter-wave generation, submillimeter-wave generation, optical pumping, far-field radiation pattern, electric field mapping, optical-to-terahertz conversion
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