Detector Systems and Sensor Technologies

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

[+] Author Affiliations
Kevin K. Ryu, Peter O’Brien, Vyshnavi Suntharalingam

Lincoln Laboratory, Lexington, Massachusetts, United States

Marshall W. Bautz, Steven E. Kissel

Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

J. Astron. Telesc. Instrum. Syst. 3(3), 036001 (Jun 28, 2017). doi:10.1117/1.JATIS.3.3.036001
History: Received February 14, 2017; Accepted June 2, 2017
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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.

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© 2017 Society of Photo-Optical Instrumentation Engineers

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", J. Astron. Telesc. Instrum. Syst. 3(3), 036001 (Jun 28, 2017). ; http://dx.doi.org/10.1117/1.JATIS.3.3.036001


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