Diffraction-Limited Performance Of Grazing Incidence Optical Systems

James E. Harvey

doi:10.1117/12.964351

21 October 1986 Diffraction-Limited Performance Of Grazing Incidence Optical Systems

James E. Harvey

Proceedings Volume 0640, Grazing Incidence Optics; (1986) https://doi.org/10.1117/12.964351
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

Diffraction effects of X-ray optical systems are often (justifiably) ignored due to the small wavelength of the X-ray radiation. However, the extremely large obscuration ratio inherent to grazing incidence optical systems produces a profound degradation of the diffraction image over that produced by a moderately obscured aperture of the same diameter. The contradictory requirements of large collecting area and relatively short length of optical elements has tended to result in proposed designs containing many concentric shells with increasingly higher obscuration ratios. In this paper we show that diffraction effects in such systems can significantly affect the achievable optical performance at the low energy (long wavelength) end of the intended operating spectral range. Parametric diffraction-limited performance predictions for both imaging and spectrographic applications will be presented and compared to AXAF performance goals and/or BBXRT fabrication techniques.

Citation Download Citation

James E. Harvey "Diffraction-Limited Performance Of Grazing Incidence Optical Systems", Proc. SPIE 0640, Grazing Incidence Optics, (21 October 1986); https://doi.org/10.1117/12.964351

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