The far-infrared and submillimeter portions of the electromagnetic spectrum provide a unique view of the astrophysical processes present in the early universe. Micro-Spec (\mu-Spec), a high-efficiency direct-detection spectrometer concept working in the 450-1000-\mum wavelength range, will enable a wide range of spaceflight missions that would otherwise be challenging due to the large size of current instruments and the required spectral resolution and sensitivity. This paper focuses on the \mu-Spec two-dimensional multimode region, where the light of different wavelengths diffracts and converges onto a set of detectors. A two-step optimization process is used to generate geometrical configurations given specific requirements on spectrometer size, operating spectral range, and performance. The canonically employed focal-plane constraints for the power combiner were removed to probe the design space in its entirety. A new four-stigmatic-point optical design solution is identified and explored for use in far-infrared and submillimeter spectroscopy.


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    Title :

    A four-pole power-combiner design for far-infrared and submillimeter spectroscopy



    Published in:

    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.60 Raumfahrttechnik / 55.60 / 50.93 / 50.93 Weltraumforschung
    Local classification TIB:    050/7040



    A Four-Pole Power-Combiner Design for Far-Infrared and Submillimeter Spectroscopy

    Giuseppe Cataldo / Samuel H Moseley / Edward J Wollack | NTRS | 2015


    A four-pole power-combiner design for far-infrared and submillimeter spectroscopy

    Cataldo, Giuseppe / Moseley, Samuel H. / Wollack, Edward J. | Elsevier | 2015



    Submillimeter and infrared astronomy

    PHILLIPS, T. | AIAA | 1982


    Quasi-Optical Power Combiner

    Xue, C.-T. / Wang, Q.-M. / Bulgakov, B. M. | British Library Online Contents | 1995