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 (μ-Spec), a high-efficiency direct-detection spectrometer concept working in the 450–1000-micron 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 μ-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


    Contributors:

    Published in:

    Publication date :

    2015-04-15



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    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