Abstract
A new far infrared grating monochromator of Czerny-Turner type has been devised and constructed which has an output optical system comprising two small spherical mirrors to compensate astigmatism of the Czerny-turner system. Anastigmatism of the system has been confirmed by ray tracing. The far infrared monochromator covers 100–240 μm wavelengths and is useful to measure spectral response of stressed Ge∶Ga photoconductors having response up to 200 μm, which have been studied for applications to far infrared astronomical and atmospheric observations by balloons.
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Hiromoto, N., Takami, H. & Itabe, T. Far infrared anastigmatic Czerny-Turner monochromator for stressed Ge∶Ga photoconductor experiments. Int J Infrared Milli Waves 10, 353–360 (1989). https://doi.org/10.1007/BF01009334
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DOI: https://doi.org/10.1007/BF01009334