Coherent Detection and Sis Mixers

نویسنده

  • J. Zmuidzinas
چکیده

Submillimeter spectroscopy is a unique and very rich source of astrophysical information. While many important results have been obtained using ground based telescopes, the Kuiper Airborne Observatory, ISO, and SWAS, this field will soon experience rapid growth and development due to projects such as SOFIA, ALMA, and the Herschel Space Observatory (HSO). High spectral resolution is and will continue to be important for many observations. This paper discusses the relative merits of coherent and direct detection for high resolution spectroscopy. In addition, the paper gives a brief review of the status of coherent detection, and superconducting tunnel junction (SIS) mixers in particular. Coherent detection can be expected to play a key role in submillimeter and far–infrared astrophysics well into the future.

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تاریخ انتشار 2002