Nanostructure‐enhanced photoconductive terahertz emission and detection

NT Yardimci, M Jarrahi - Small, 2018 - Wiley Online Library
Photoconductive antennas are commonly used for terahertz wave generation and detection.
However, their relatively low radiation power and detection sensitivity often place limitations …

Heterodyne terahertz detection through electronic and optoelectronic mixers

YJ Lin, M Jarrahi - Reports on Progress in Physics, 2020 - iopscience.iop.org
The high sensitivity detection of terahertz radiation is crucial for many chemical sensing,
biomedical imaging, security screening, nondestructive quality control, high-data-rate …

Room-temperature heterodyne terahertz detection with quantum-level sensitivity

N Wang, S Cakmakyapan, YJ Lin, H Javadi… - Nature …, 2019 - nature.com
Our Universe is most radiant at terahertz frequencies (0.1–10.0 THz)(ref.), providing critical
information on the formation of the planets, stars and galaxies, as well as the atmospheric …

Wavelength conversion through plasmon-coupled surface states

D Turan, PK Lu, NT Yardimci, Z Liu, L Luo… - Nature …, 2021 - nature.com
Surface states generally degrade semiconductor device performance by raising the charge
injection barrier height, introducing localized trap states, inducing surface leakage current …

Significant performance improvement of a terahertz photoconductive antenna using a hybrid structure

M Bashirpour, S Ghorbani, M Kolahdouz, M Neshat… - RSC …, 2017 - pubs.rsc.org
A photoconductive terahertz antenna based on a distributed Bragg reflector, recessed
nanoplasmonic grating and recessed electrodes is proposed in this paper. By use of the …

Polarization-insensitive graphene-based band-notched frequency selective absorber at terahertz

A Malekara, C Ghobadi, J Nourinia - Applied Optics, 2024 - opg.optica.org
This paper introduces a new polarization-insensitive graphene-based frequency selective
absorber (FSA) with a reflective notch designed for terahertz applications. The proposed …

Design and analysis of a high-performance terahertz photoconductive modulator enhanced by photonic crystal cavity

F Alihosseini, Z Heshmatpanah, H Zandi - Applied Physics B, 2022 - Springer
We have proposed and designed a high-speed and high-performance optically controlled
terahertz (THz) intensity modulator based on the free carrier modulation of a GaAs …

Broadband THz emission of long pulses from photomixing process with optical chirped pulses

G Taton, F Fauquet, I Betka, JP Guillet, F Darracq… - Optics Letters, 2025 - opg.optica.org
Terahertz (THz) generation via photomixing on photoconductive antenna using twin delayed
chirped pulses provides a long THz pulse with a narrow bandwidth. To generate a long …

Plasmonic heterodyne spectrometry for resolving the spectral signatures of ammonia over a 1-4.5 THz frequency range

YJ Lin, S Cakmakyapan, N Wang, D Lee, M Spearrin… - Optics …, 2019 - opg.optica.org
We present a heterodyne terahertz spectrometry platform based on plasmonic photomixing,
which enables the resolution of narrow spectral signatures of gases over a broad terahertz …

Optical absorption enhancement in LTG-GaAs for efficiency improvement of THz photoconductive antennas

M Bashirpour, S Ghorbani… - … on Millimeter-Wave …, 2016 - ieeexplore.ieee.org
A novel structure for THz photoconductive antennas (PCA) has been proposed to enhance
the optical absorption, and consequently the power conversion efficiency. In the proposed …