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Your search keyword '"Shi, Sheng-Cai"' showing total 293 results
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293 results on '"Shi, Sheng-Cai"'

103. Progress in the Critical Assessment for a Far-Infrared Space Interferometer with Double Fourier Modulation (FP7-FISICA)

Author

Savini, G., Ade, P.A.R., Baccichet, Nicola, Bracken, Colm, Dohlen, Kjetil, Donohoe, Anthony, Gom, Brad, Griffin, Matthew J., Holland, Wayne, Iafolla, Valerio, Ivison, Rob, Jones, Martyn, Juanola-Parramon, Roser, Lightfoot, John, Liu, Scige, McMillan, Alison, Murphy, J.Anthony, Naylor, David A., O'Sullivan, Créidhe, Pascale, Enzo, Pezzuto, Stefano, Rakotonimbahy, Eddy, Schito, Daniele, Spencer, Locke D., Spinoglio, Luigi, Swinyard, Bruce, Veenendaal, Ian, Vives, Sebastien, Walker, David, Leisawitz, David T., Shi, Sheng-Cai, Matsuo, Hiroshi, Savini, G., Ade, P.A.R., Baccichet, Nicola, Bracken, Colm, Dohlen, Kjetil, Donohoe, Anthony, Gom, Brad, Griffin, Matthew J., Holland, Wayne, Iafolla, Valerio, Ivison, Rob, Jones, Martyn, Juanola-Parramon, Roser, Lightfoot, John, Liu, Scige, McMillan, Alison, Murphy, J.Anthony, Naylor, David A., O'Sullivan, Créidhe, Pascale, Enzo, Pezzuto, Stefano, Rakotonimbahy, Eddy, Schito, Daniele, Spencer, Locke D., Spinoglio, Luigi, Swinyard, Bruce, Veenendaal, Ian, Vives, Sebastien, Walker, David, Leisawitz, David T., Shi, Sheng-Cai, and Matsuo, Hiroshi

Abstract

The progress and results of the ongoing FP7-FISICA programme to re-asses the scientific goals of a Far-Infrared Space Interfereometer and push the development of some of its key technology elements are reported.

Published
2015

110. Demonstration of a fully integrated superconducting receiver with a 27 THz quantum cascade laser

Author

Miao, Wei, primary, Lou, Zheng, additional, Xu, Gang-Yi, additional, Hu, Jie, additional, Li, Shao-Liang, additional, Zhang, Wen, additional, Zhou, Kang-Min, additional, Yao, Qi-Jun, additional, Zhang, Kun, additional, Duan, Wen-Ying, additional, Shi, Sheng-Cai, additional, Colombelli, Raffaele, additional, Beere, Harvey E., additional, and Ritchie, David A., additional

Published
2015
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121. Terahertz high-sensitivity superconducting detectors

Author

Miao Wei, Shi Sheng-Cai, Zhang Wen, and Li Jing

Subjects
Heterodyne, Physics, Terahertz radiation, Frequency band, business.industry, Bolometer, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Physics::Optics, General Physics and Astronomy, law.invention, Telescope, Optics, law, Transition edge sensor, business, Microwave
Abstract

The terahertz regime, as a last radio window, remains to be fully explored, and astronomical and atmospheric observations in this regime are scientifically important. Like other frequency regimes, developing high-sensitivity detectors (coherent and incoherent) is of particular significance for both ground-based and space-borne facilities. As the coherent detector of choice below 1.4 THz, superconductor-insulator-superconductor (SIS) heterodyne mixers have achieved as high a sensitivity as five times the quantum limit around 1.4 THz. It is, however, still a challenge to developing SIS mixers at frequencies beyond 1.4 THz with considerable transmission loss in superconducting circuits due to the Cooper-pair breaking by energetic photons and increased many difficulties in designing and fabricating. So far, superconducting hot electron bolometer (HEB) mixers have been the most sensitive heterodyne detectors at frequencies above 1.5 THz, and successfully used to detect molecular spectral lines up to 2.5 THz from ground-based and space telescopes. Although spiral-antenna coupled NbN HEB mixers show a good sensitivity in the whole THz frequency range, the directly measured spectral response with Fourier transform spectrometer falls quickly as frequency increases, especially above 3 THz. The terahertz band is also of particular importance to observe astronomical objects such as cosmic microwave background, early distant objects, cold objects and dusty objects. Aiming at such objects, we develop a terahertz imaging array system by combining advanced superconducting detectors such as transition edge sensor (TES) and microwave kinetic inductance detectors (MKIDs), thus the system has a frequency band centred at 350 m, an operational temperature of 0.3 K, and a sensitivity reaching background limit performance for ground-based applications. In addition, it is expected to have some breakthroughs in ultra-sensitive superconducting TES and MKID, low noise multi-channel readout and multiplexing, efficient terahertz-wave coupling technology, and large-scale array system integration. The developed terahertz imaging array system will serve as the next-generation instrument of Dome A 5 m terahertz telescope, conducting a 350 m-band legacy survey for studying the planets, stars, galaxies and cosmology. Besides the application in astronomy, the developed terahertz imaging array system can also be applied to some areas requiring rapid detection such as security, deep space exploration, and biomedical imaging. In this paper, we mainly introduce the superconducting detectors developed at Purple Mountain Observatory and those for international collaborative projects.

Published
2015
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125. Sideband separating mixer for 600-720 GHz

Author

Zhang, Cunlin, Zhang, Xi-Cheng, Siegel, Peter H., He, Li, Shi, Sheng-Cai, Khudchenko, Andrey, Hesper, Ronald, Baryshev, Andrey, Gerlofma, Gerrit, Mena, Patricio, Zijlstra, Tony, Klapwijk, Teun, Spaans, Marco, Kooi, Jacob W., Zhang, Cunlin, Zhang, Xi-Cheng, Siegel, Peter H., He, Li, Shi, Sheng-Cai, Khudchenko, Andrey, Hesper, Ronald, Baryshev, Andrey, Gerlofma, Gerrit, Mena, Patricio, Zijlstra, Tony, Klapwijk, Teun, Spaans, Marco, and Kooi, Jacob W.

Abstract

The ALMA Band 9 receiver cartridge (600-720 GHz) based on Dual Sideband (DSB) superconductor-insulatorsuperconductor (SIS) mixer is currently in full production. In the case of spectral line observations, the integration time to reach a certain signal-to-noise level can be reduced by about a factor of two by rejecting an unused sideband. The goal is to upgrade the current ALMA band 9 cartridge to a full dual-polarization sideband separating (2SB) capability, with minimal-cost upgrade path. A new compact and modular sideband separating mixer was designed, and a prototype manufactured. The individual SIS mixer devices in the 2SB block are implemented as conventional Band 9 DSB mixers, so that existing devices can be reused and tested individually. Any ALMA DSB developments contribute to the 2SB upgrade. The first experimental results demonstrate noise temperature from 300K to 500K over 80% of the band, which will be improved to fit the ALMA requirements. Nevertheless, the frequency response for 2SB is the same as for DSB, showing that the RF design is still valid, even with different SIS mixer devices. The quality of the RF and IF design is confirmed by a sideband rejection ratio of about 15 dB, which is within the ALMA spec (>10dB ).

Published
2010

128. Development of an $$8\times 8$$ CPW Microwave Kinetic Inductance Detector (MKID) Array at 0.35 THz.

Author

Li, Jing, Yang, Jin-Ping, Lin, Zhen-Hui, Liu, Dong, Shi, Sheng-Cai, Mima, S., Furukawa, N., and Otani, C.

Subjects
ELECTRIC inductance, TITANIUM nitride, MICROWAVES, FREQUENCY division multiple access, SLOT antennas, ENERGY bands
Abstract

Microwave kinetic inductance detectors (MKIDs) are promising for THz direct detector arrays of large size, particularly with simple frequency-division multiplexing. Purple Mountain Observatory is developing a terahertz superconducting imaging array (TeSIA) for the DATE5 telescope to be constructed at Dome A, Antarctica. Here we report on the development of a prototype array for the TeSIA, namely an $$8\times 8$$ CPW MKID array at 0.35 THz. The resonance frequencies of the MKIDs span the 4-5.575 GHz band with an interval of 25 MHz. Each detector is integrated with a twin-slot antenna centered at 0.5 THz and with a relative bandwidth of 10 %, while the whole MKID array with a micro-lens array. Detailed design and measurement results will be presented. [ABSTRACT FROM AUTHOR]

Published
2016
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133. THz atmospheric transmission measured at antarctic Dome A

Author

Shi, Sheng-Cai, primary, Paine, Scott, additional, Yao, Qi-Jun, additional, Lin, Zhen-Hui, additional, Li, Xin-Xing, additional, Duan, Wen-Ying, additional, Matsuo, Hiroshi, additional, Zhang, Qizhou, additional, Yang, Ji, additional, Ashley, Michel C.B., additional, Shang, Zhao-Hui, additional, and Hu, Zhong-Wen, additional

Published
2012
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134. 129 GHz SIS MIXER RECEIVER FOR KOREAN VLBI NETWORK

Author

Lee, Jung-Won, primary, Wang, Ming-Jye, additional, Li, Chao-Te, additional, Chen, Tse-Jun, additional, Kim, Soo-Yeon, additional, Lu, Wei-Chun, additional, Kang, Yong-Woo, additional, Shi, Sheng-Cai, additional, and Han, Seog-Tae, additional

Published
2012
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139. Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulses

Author

Li, Chun, primary, Zhou, Mu-Lin, additional, Ding, Wen-Jun, additional, Du, Fei, additional, Liu, Feng, additional, Li, Yu-Tong, additional, Wang, Wei-Min, additional, Sheng, Zheng-Ming, additional, Ma, Jing-Long, additional, Chen, Li-Ming, additional, Lu, Xin, additional, Dong, Quan-Li, additional, Wang, Zhao-Hua, additional, Lou, Zheng, additional, Shi, Sheng-Cai, additional, Wei, Zhi-Yi, additional, and Zhang, Jie, additional

Published
2011
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146. Terahertz Direct Detection Characteristics of a Superconducting NbN Bolometer

Author

Shi Sheng-Cai, Zhang Wen, Ren Yuan, Miao Wei, and Yao Qi-Jun

Subjects
Spiral antenna, Physics, Superconductivity, Transimpedance amplifier, business.industry, Terahertz radiation, Bolometer, General Physics and Astronomy, Microbolometer, Noise (electronics), law.invention, law, Optoelectronics, business, Noise-equivalent power
Abstract

We report the terahertz direct detection characteristics of a spiral antenna coupled NbN superconducting hot-electron bolometer (HEB) at a bath temperature of 4.2K. Thermal conductance determined from resistance transition curves with different bias currents is found to be 3 x 10(-7) W/K. The device shows a read-out circuit limited noise equivalent power (NEP) of 4.5x10(-12) W/Hz(1/2) at 4.2K with a home-made transimpedance amplifier operating at room temperature.

Published
2011
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