상세정보
학술지
InGaAs Schottky Barrier Diode Array Detector for a Real-Time Compact Terahertz Line Scanner
- 발행일
- 201311
- 출처
- Optics Express, v.21 no.22, pp.25874-25882
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 초록
- 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 제안 키워드
- 180 GHz, 250 GHz, 3-dB bandwidth, Array-type, Broadband Antenna, Center frequency, Diode array detector, Gunn diode, High yield, Line beam, Real-time compact