Measurement of static shift: variant point spread function on a picosecond streak camera

D. Aubert; Philippe Millier

doi:10.1117/12.516890

1 August 2003 Measurement of static shift-variant point spread function on a picosecond streak camera

D. Aubert, Philippe Millier

Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516890
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France

Abstract

Advances in understanding laser-matter interaction physical processes require extending instrumentation observations limits. In the case of high-speed photography by means of streak analyzers, the main contribution in improving instruments comes from high-speed HV electronics and new tube architectures. However, the cost of these technologies is still a limiting factor. The alternative to instrumentation renewal is based on using conventional technology (Centrally symmetric electron lens streak tube) associated to a convenient image processing. This option, relying on prior metrological characterization of the degradations generated by streak cameras, can be performed thanks to the affordable powerful computing capabilities and the widespread use of CCD readout. This paper describes a simple method for measuring static Point Spread Function (PSF) on streak tube. Experimental results are discussed and then introduced for image restoration purpose. A discussion of a deconvolution method based on Singular Value Decomposition (SVD) for a shift variant blur is briefly sketched. Application of this method shows an actual increase of streak images spatiotemporal resolution.

Citation Download Citation

D. Aubert and Philippe Millier "Measurement of static shift-variant point spread function on a picosecond streak camera", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); https://doi.org/10.1117/12.516890

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KEYWORDS

Point spread functions

Image restoration

Image filtering

Deconvolution

Picosecond phenomena

Streak cameras

Image processing

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