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Journal Article
InGaAs Schottky Barrier Diode Array Detector for a Real-Time Compact Terahertz Line Scanner
- Authors
- Sang-Pil Han, Hyunsung Ko, Jeong-Woo Park, Namje Kim, Young-Jong Yoon, Jun-Hwan Shin, Dae Yong Kim, Dong Hun Lee, Kyung Hyun Park
- Issue Date
- 2013-11
- Citation
- Optics Express, v.21, no.22, pp.25874-25882
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- We present a terahertz (THz) broadband antenna-integrated 1 × 20 InGaAs Schottky barrier diode (SBD) array detector with an average responsivity of 98.5 V/W at a frequency of 250 GHz, which is measured without attaching external amplifiers and Si lenses, and an average noise equivalent power (NEP) of 106.6 pW/?닖Hz. The 3-dB bandwidth of the SBD detector is also investigated at approximately 180 GHz. For implementing an array-type SBD detector by a simple fabrication process to achieve a high yield, a structure comprising an SiNx layer instead of an air bridge between the anode and the cathode is designed. THz line beam imaging using a Gunn diode emitter with a center frequency of 250 GHz and a 1 × 20 SBD array detector is successfully demonstrated. ©2013 Optical Society of America.
- KSP Keywords
- 180 GHz, 250 GHz, 3-dB bandwidth, Array-type, Broadband Antenna, Center frequency, Diode array detector, Fabrication process, Gunn diode, High yield, Line beam
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
