A four-pole power-combiner design for far-infrared and submillimeter spectroscopy
Abstract
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 (-Spec), a high-efficiency direct-detection spectrometer concept working in the 450-1000-m 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 -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.
Keywords
Cite
@article{arxiv.1505.05036,
title = {A four-pole power-combiner design for far-infrared and submillimeter spectroscopy},
author = {Giuseppe Cataldo and Samuel H. Moseley and Edward J. Wollack},
journal= {arXiv preprint arXiv:1505.05036},
year = {2015}
}
Comments
This paper was presented during the 65th International Astronautical Congress in Toronto