Directly deposited optical-blocking filters for single-photon x-ray imaging spectroscopy

Kevin K. Ryu; Marshall W. Bautz; Steven E. Kissel; Peter O'Brien; Vyshnavi Suntharalingam

doi:10.1117/1.JATIS.3.3.036001

28 June 2017 Directly deposited optical-blocking filters for single-photon x-ray imaging spectroscopy

Kevin K. Ryu, Marshall W. Bautz, Steven E. Kissel, Peter O'Brien, Vyshnavi Suntharalingam

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 3, Issue 3, 036001 (June 2017). https://doi.org/10.1117/1.JATIS.3.3.036001

Abstract

Directly deposited optical-blocking filters (DD OBFs) have the potential to improve filter performance and lower risk and cost for future x-ray imaging spectroscopy missions. However, they have not been fully characterized on high-performance charge coupled devices (CCDs). This paper reports the results of DD OBFs processed on high-performance photon-counting CCDs. It is found that CCD performance is not degraded by deposition of such filters. X-ray and optical transmission through the OBF is characterized and found to match theoretical expectation. Light-leaks through pinholes and the side and back surfaces are found to lower the optical extinction ratio; various coating processes are developed to resolve these issues.

Citation Download Citation

Kevin K. Ryu, Marshall W. Bautz, Steven E. Kissel, Peter O'Brien, and Vyshnavi Suntharalingam "Directly deposited optical-blocking filters for single-photon x-ray imaging spectroscopy," Journal of Astronomical Telescopes, Instruments, and Systems 3(3), 036001 (28 June 2017). https://doi.org/10.1117/1.JATIS.3.3.036001

Received: 14 February 2017; Accepted: 2 June 2017; Published: 28 June 2017

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