تقرير
Development and validation of a cryogenic far-infrared diffraction grating spectrometer used to post-disperse the output from a Fourier transform spectrometer
| العنوان: | Development and validation of a cryogenic far-infrared diffraction grating spectrometer used to post-disperse the output from a Fourier transform spectrometer |
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| المؤلفون: | Anderson, Alicia M., Naylor, David A., Gom, Brad G., Buchan, Matthew A., Christiansen, Adam J., Veenendaal, Ian T. |
| المصدر: | Rev. Sci. Instrum. 1 January 2024; 95 (1): 015116 |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | Recent advances in far-infrared detector technology have led to increases in raw sensitivity of more than an order of magnitude over previous state-of-the-art detectors. With such sensitivity, photon noise becomes the dominant noise component, even when using cryogenically cooled optics, unless a method of restricting the spectral bandpass is employed. The leading instrument concept features reflecting diffraction gratings which post-disperse the light that has been modulated by a polarizing Fourier transform spectrometer (FTS) onto a detector array, thereby reducing the photon noise on each detector. This paper discusses the development of a cryogenic (4 K) diffraction grating spectrometer which operates over the wavelength range from 285 - 500 $\mu$m and was used to post-disperse the output from a room-temperature polarizing FTS. Measurements of the grating spectral response and diffraction efficiency are presented as a function of both wavelength and polarization to characterize the instrumental performance. Comment: 9 pages, 14 figures. The following article has been accepted by Review of Scientific Instruments. It can be found at https://doi.org/10.1063/5.0177603 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/5.0177603 |
| URL الوصول: | http://arxiv.org/abs/2401.04488 |
| رقم الأكسشن: | edsarx.2401.04488 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/5.0177603 |
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