Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Fabien Defrance"'
Publikováno v:
Journal of Low Temperature Physics. 209:330-336
We present a multi-chroic kinetic inductance detector (KID) pixel design integrated with a broadband hierarchical phased-array antenna. Each low-frequency pixel consists of four high-frequency pixels. Four passbands are designed from 125 to 365 GHz a
Autor:
Goutam Chattopadhyay, Cecile Jung-Kubiak, T. Macioce, Sofia Rahiminejad, Jake Connors, Fabien Defrance, Jack Sayers, Sunil Golwala, Simon J. E. Radford
Publikováno v:
Journal of Low Temperature Physics. 199:935-942
Future instruments employing cryogenic detectors for millimeter and submillimeter astronomy applications can benefit greatly from silicon vacuum windows with broadband antireflection treatment. Silicon is an ideal optical material at these wavelength
Autor:
Sofia Rahiminejad, Fabien Defrance, Goutam Chattopadhyay, Cecile Jung-Kubiak, Jake Connors, Jack Sayers, Sunil Golwala, Simon J. E. Radford, T. Macioce
We present the design, simulation, and planned fabrication process of a flat high resistivity silicon gradient index (GRIN) lens for millimeter and submillimeter wavelengths with very low absorption losses. The gradient index is created by subwavelen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fac37ff569bdec945aa6889e38635508
Autor:
Sunil Golwala, Goutam Chattopadhyay, Fabien Defrance, Hiroshige Yoshida, Edward Tong, Matthew I. Hollister, Estefania Padilla, Jack Sayers, Simon Radford, Cecile Jung-Kubiak, Jake Connors
Publikováno v:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX.
Many applications in astronomy from tens of GHz to THz frequencies, on the ground and in space, would benefit from silicon optics because silicon's high refractive index and low loss make it an ideal optical material at these frequencies. Silicon can
Autor:
Cecile Jung-Kubiak, Fabien Defrance, Jack Sayers, Clare deYoung, Goutam Chattopadhyay, Hiroshige Yoshida, Jake Connors, Matthew I. Hollister, Sunil Golwala, Simon J. E. Radford
Although high-resistivity, low-loss silicon is an excellent material for THz transmission optics, its high refractive index necessitates antireflection treatment. We fabricated a wide-bandwidth, two-layer antireflection treatment by cutting subwavele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dc5338421fbecc8436a456b8c3c93ea
http://arxiv.org/abs/1803.05168
http://arxiv.org/abs/1803.05168
Publikováno v:
72nd International Symposium on Molecular Spectroscopy: June 19-23
72nd International Symposium on Molecular Spectroscopy: June 19-23, University of Illinois at Urbana-Champaign, pp.1-1, 2017, ⟨10.15278/isms.2017.TH09⟩
72nd International Symposium on Molecular Spectroscopy: June 19-23, University of Illinois at Urbana-Champaign, pp.1-1, 2017, ⟨10.15278/isms.2017.TH09⟩
Laboratory spectroscopy, especially at THz and mm-wave ranges require the advances in instrumentation techniques to provide high resolution of the recorded spectra with precise frequency measurement that facilitates the mathematical treatment. We rep
Autor:
Fabien Defrance, Massimiliano Casaletti, Julien Sarrazin, Martina Wiedner, Yan Delorme, Grégori Gay, Roland Lefevre
Publikováno v:
HAL
Conference ISSTT 2015
Conference ISSTT 2015, Mar 2015, Cambridge (Massachusetts), United States. pp.16-18
Conference ISSTT 2015
Conference ISSTT 2015, Mar 2015, Cambridge (Massachusetts), United States. pp.16-18
International audience; For heterodyne array receivers, phase gratings are useful to divide the local oscillator (LO) signal into several beams to pump the mixers of an array. We have developed a computer model to compute general phase profiles that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2a5dd159ff93ca48c434fea0028ab692
https://hal.sorbonne-universite.fr/hal-01150551
https://hal.sorbonne-universite.fr/hal-01150551
Autor:
Fabien Defrance, Massimiliano Casaletti, Julien Sarrazin, Martina Wiedner, Hugh Gibson, Gregory Gay, Roland Lefevre, Yan Delorme
Publikováno v:
HAL
Conference EuCAP 2017
Conference EuCAP 2017, Mar 2017, Paris, France
Conference EuCAP 2017
Conference EuCAP 2017, Mar 2017, Paris, France
International audience; An iterative alternate projection-based algorithm is developed to design structured surfaces able to generate any far-field beam pattern at GHz and THz frequencies. To validate the algorithm, two structured profiles (a reflect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::479c12b235969b74a40fb68944c42482
https://hal.sorbonne-universite.fr/hal-01511490
https://hal.sorbonne-universite.fr/hal-01511490