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Z-Spec: a broadband, direct-detection, millimeter-wave spectrometer

Naylor, Bret J. and Ade, Peter A. R. and Bock, James J. and Bradford, C. Matt and Dragovan, Mark and Duband, Lionel and Earle, Lieko and Glenn, Jason and Matsuhara, Hideo and Nguyen, Hien and Yun, Minhee and Zmuidzinas, Jonas (2003) Z-Spec: a broadband, direct-detection, millimeter-wave spectrometer. In: Millimeter and Submillimeter Detectors for Astronomy. Proceedings of SPIE. No.4855. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, pp. 239-248. ISBN 9780819446343.

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Z-Spec is a broadband (195 - 310 GHz), direct-detection, millimeter-wave spectrometer with moderate resolution (R ~ 350) that we are building to observe CO rotational lines and atomic fine-structure lines in the recently discovered population of submillimeter galaxies. A large fraction of these sources cannot be identified optically and thus redshift determination is extremely difficult. The large instantaneous bandwidth of Z-Spec will allow measurement of redshifts up to z~4 via detection of two or more CO lines in a single spectrum. The spectrometer is based on a parallel-plate waveguide grating architecture that is substantially more compact than a conventional free-space grating system. The spectrometer and an array of 160 silicon nitride micromesh bolometers will be cooled to 100 mK to provide background-limited sensitivity. In addition to measuring the redshifts of sources discovered in submillimeter continuum surveys, Z-Spec will demonstrate a novel spectrometer concept well-suited for future far-infrared space missions.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Ade, Peter A. R.0000-0002-5127-0401
Bock, James J.0000-0002-5710-5212
Bradford, C. Matt0000-0001-5261-7094
Glenn, Jason0000-0001-7527-2017
Additional Information:© 2003 Society of Photo-Optical Instrumentation Engineers. We are grateful to Peter Siegel at JPL for his generous help with the prototype spectrometer testing. We would like to acknowledge support from the JPL Directors Research and Development Fund, sponsored by NASA. Jason Glenn also acknowledges NASA (NAGS-11911) and The Research Corporation (RI0928). C. Matt Bradford is supported in part by a Millikan Fellowship at CIT.
Funding AgencyGrant Number
JPL Research and Technology Development FundUNSPECIFIED
Research CorporationRI0928
Robert A. Millikan FellowshipUNSPECIFIED
Subject Keywords:millimeter-wave, spectroscopy, bolometers, cryogenic, waveguide, diffraction grating
Series Name:Proceedings of SPIE
Issue or Number:4855
Record Number:CaltechAUTHORS:20181219-094847274
Persistent URL:
Official Citation:Bret J. Naylor, Peter A. R. Ade, James J. Bock, Charles M. Bradford, Mark Dragovan, Lionel Duband, Lieko Earle, Jason Glenn, Hideo Matsuhara, Hien Nguyen, Minhee Yun, Jonas Zmuidzinas, "Z-Spec: a broadband direct-detection millimeter-wave spectrometer," Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459419
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91910
Deposited By: Tony Diaz
Deposited On:19 Dec 2018 18:04
Last Modified:09 Mar 2020 13:18

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