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arXiv · 1408.4790

Scalable background-limited polarization-sensitive detectors for mm-wave applications

Karwan Rostem·Aamir Ali·John W. Appel·Charles L. Bennett·David T. Chuss·Felipe A. Colazo·Erik Crowe·Kevin L. Denis·Tom Essinger-Hileman·Tobias A. Marriage·Samuel H. Moseley·Thomas R. Stevenson·Deborah W. Towner·Kongpop U-Yen·Edward J. Wollack
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Abstract

We report on the status and development of polarization-sensitive detectors for millimeter-wave applications. The detectors are fabricated on single-crystal silicon, which functions as a low-loss dielectric substrate for the microwave circuitry as well as the supporting membrane for the Transition-Edge Sensor (TES) bolometers. The orthomode transducer (OMT) is realized as a symmetric structure and on-chip filters are employed to define the detection bandwidth. A hybridized integrated enclosure reduces the high-frequency THz mode set that can couple to the TES bolometers. An implementation of the detector architecture at Q-band achieves 90% efficiency in each polarization. The design is scalable in both frequency coverage, 30-300 GHz, and in number of detectors with uniform characteristics. Hence, the detectors are desirable for ground-based or space-borne instruments that require large arrays of efficient background-limited cryogenic detectors.

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Karwan Rostem, Aamir Ali, John W. Appel, Charles L. Bennett, David T. Chuss, Felipe A. Colazo, Erik Crowe, Kevin L. Denis, Tom Essinger-Hileman, Tobias A. Marriage, Samuel H. Moseley, Thomas R. Stevenson, Deborah W. Towner, Kongpop U-Yen, Edward J. Wollack. 2014-08-20. Scalable background-limited polarization-sensitive detectors for mm-wave applications. https://doi.org/10.1117/12.2057266

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