Abstract
The photoconductive (PC) antenna is a key device for the recent terahertz (THz) photonics based on laser-pumped generation and detection of THz radiation. In this paper we report on two new types of PC antennas: the Schottky PC antenna and the multi-contacts PC antenna. The former one is able to detect THz radiation intensity without the time-delay scan and useful for applications where spectroscopic information is not important, such as the THz intensity imaging. The latter one is useful for the polarization sensitive THz spectroscopy, such as the THz ellipsometry. The characteristic features of these new types of PC antennas are studied by using a THz time-domain spectroscopy system.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
D. H. Auston, K. P. Cheung, and P. R. Smith: “Picosecond photoconducting Hertzian dipoles,” Appl. Phys. Lett., 45, 284 (1984).
See, for example, the section 5.4 of Classical Electromagnetic Radiation by G. S. Smith (Cambridge University Press, 1997).
M. Tani, K. Sakai, H. Abe, S. Nakashima, H. Harima, M. Hangyo, Y. Tokuda, K. Kanamoto, Y. Abe, N. Tsukada, “Spectroscopic Characterization of Low-Temperature Grown GaAs Epitaxial Films,” Jpn. J. Appl. Phys. 33, 4807 (1994).
M. Tani, S. Matsuura, and K. Sakai, “Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs,” Appl. Opt. 36, 7853 (1997).
M. Tani, M. Hermann and K. Sakai, “Generation and detection of terahertz Pulsed Radiation and its application to imaging,” Meas. Sci. Technol. 13, 1739 (2002).
M. Tani, O. Morikawa, S. Matsuura and M. Hangyo, “Generation of terahertz radiation by photomixing with dual-and multiple-mode lasers,” Semicond. Sci. Technol. 20, S151 (2005).
S. Nishizawa, K. Sakai, M. Hangyo, T. Nagashima, M. W. Takeda, K. Tominaga, A. Oka, K. Tanaka, and O. Morikawa, Chap. “Terahertz Time-Domain Spectroscopy,” in Terahertz Optoelectronics (Ed. K. Sakai, Springer 2005).
D. T. Hodges and M. McColl, “Extension of the Schottky barrier detector to 70 μm (4.3 THz) using submicron-dimensional contacts,” Appl. Phys. Lett., 30, 5 (1977).
C. Que, M. Tani, M. Hangyo, F. Miyamaru, and S. Tanaka, “Rectification of terahertz signal using a Schottky photoconductive antenna,” submitted to Appl. Phys. Lett.
Y. Hirota, R. Hattori, M. Tani and M. Hangyo, “Polarization modulation of terahertz waves by four-contact photoconductive antenna,” submitted to Optics Express.
Q. Chen and X.-C. Zhang, “Polarization modulation in optoelectronic generation and detection of terahertz beams,” Appl. Phys. Lett. 74, 3435 (1999).
R. Shimano, H. Nishimura and T. Sato, “Frequency Tunable Circular Polarization Control of Terahertz Radiation,” Jpn. J. Appl. Phys. 44, L676 (2005).
E. Castro-Camus, J. Lloyd-Hughes, M. B. Johnston, M. D. Fraser, H. H. Tan, and C. Jagadish, “Polarization-sensitive terahertz detection by multicontact photoconductive receivers,” Appl. Phys. Lett. 86, 254102 (2005).
T. Nagashima, and M. Hangyo, “Measurement of Complex Optical Constants of Highly-Doped Si Wafer Using Terahertz Ellipsometry,” Appl. Phys. Lett., 79, 3917 (2001).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tani, M., Hirota, Y., Que, C.T. et al. NOVEL TERAHERTZ PHOTOCONDUCTIVE ANTENNAS. Int J Infrared Milli Waves 27, 531–546 (2006). https://doi.org/10.1007/s10762-006-9105-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10762-006-9105-8