TY  - JOUR
AU  - Kataoka, T.
AU  - Kajikawa, K.
AU  - Kitagawa, J.
AU  - Kadoya, Y.
AU  - Takemura, Y.
PY  - 2010
DA  - 2010//
TI  - Improved sensitivity of terahertz detection by GaAs photoconductive antennas excited at 1560 nm
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 201110 (1
EP  - 3)
VL  - 97
KW  - photoconductive antenna (PCA)
AB  - The terahertz detection by photoconductive antennas (PCAs) based on low-temperature grown (LTG) GaAs with 1.5 μm pulse excitation was revisited. We found that the detection efficiency can be improved by a factor of 10 (20 dB) by reducing the excitation spot size and the gap length of the PCA, maintaining the low noise feature of the PCA on LTG GaAs. As a result, the signal-to-noise ratio higher than 50 dB was obtained at a reasonable incident power of 9.5 mW, suggesting that the scheme is promising for the detection of terahertz waves in practical time domain systems.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=904), last updated on Tue, 28 Jan 2014 20:12:10 -0600
ID  - Kataoka_etal2010
ER  -