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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 13 — Jun. 28, 2004
  • pp: 2954–2959

Ultrabroadband terahertz field detection by proton-bombarded InP photoconductive antennas

Tze-An Liu, Masahiko Tani, Makoto Nakajima, Masanori Hangyo, Kiyomi Sakai, Shin-ichi Nakashima, and Ci-Ling Pan  »View Author Affiliations


Optics Express, Vol. 12, Issue 13, pp. 2954-2959 (2004)
http://dx.doi.org/10.1364/OPEX.12.002954


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Abstract

Photoconductive (PC) antennas fabricated on InP bombarded with 180 keV protons of different dosages (InP:H+) all exhibit a useful bandwidth of about 30 THz, comparable to that of the LT-GaAs PC antenna. The peak signal current of the best InP: H+ device (dosage of 1015 ions/cm2) is slightly higher than that of the LT-GaAs one, while the signal-to-noise ratio (SNR) of the former is about half of that of the latter due to lower resistivity. This suggests that InP: H+ can be a good substrate for THz PC antennas with proper annealing and/or implantation recipe.

© 2004 Optical Society of America

OCIS Codes
(040.1880) Detectors : Detection
(260.3090) Physical optics : Infrared, far
(320.7080) Ultrafast optics : Ultrafast devices
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Research Papers

History
Original Manuscript: April 30, 2004
Revised Manuscript: June 19, 2004
Published: June 28, 2004

Citation
Tze-An Liu, Masahiko Tani, Makoto Nakajima, Masanori Hangyo, Kiyomi Sakai, Shin-ichi Nakashima, and Ci-Ling Pan, "Ultrabroadband terahertz field detection by proton-bombarded InP photoconductive antennas," Opt. Express 12, 2954-2959 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-13-2954


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References

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