Status of SuperSpec: A Broadband, On-Chip Millimeter-Wave Spectrometer

被引：8

作者：

Hailey-Dunsheath, S. ^{[1
]}

Shirokoff, E. ^{[2
]}

Barry, P. S. ^{[3
]}

Bradford, C. M. ^{[4
]}

Chattopadhyay, G. ^{[4
]}

Day, P. ^{[4
]}

Doyle, S. ^{[3
]}

Hollister, M. ^{[1
]}

Kovacs, A. ^{[5
]}

LeDuc, H. G. ^{[4
]}

Mauskopf, P. ^{[3
,6
]}

McKenney, C. M. ^{[1
]}

Monroe, R. ^{[1
]}

O'Brient, R. ^{[1
]}

Padin, S. ^{[1
]}

Reck, T. ^{[4
]}

Swenson, L. ^{[1
]}

Tucker, C. E. ^{[3
]}

Zmuidzinas, J. ^{[1
,4
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Univ Chicago, Chicago, IL 60637 USA

[3] Cardiff Univ, Sch Phys & Astron, Cardiff CF10 3AX, S Glam, Wales

[4] CALTECH, Jet Prop Lab, Pasadena, CA USA

[5] Univ Minnesota, St Paul, MN USA

[6] Arizona State Univ, Tempe, AZ USA

来源：

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VII | 2014年 / 9153卷

关键词：

Kinetic Inductance Detector; Millimeter-Wave; Spectroscopy; Titanium Nitride; REDSHIFT; GALAXIES; LINE;

D O I：

10.1117/12.2057229

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 - 500), large bandwidth (similar to 1.65: 1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100 - 200 MHz. We have tested a new prototype device that is more sensitive than previous devices, and easier to fabricate. We present a characterization of a representative R = 282 channel at f = 236 GHz, including measurements of the spectrometer detection efficiency, the detector responsivity over a large range of optical loading, and the full system optical efficiency. We outline future improvements to the current system that we expect will enable construction of a photon-noise-limited R = 100 filter bank, appropriate for a line intensity mapping experiment targeting the [CII] 158 mu m transition during the Epoch of Reionization.

引用

页数：16

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