Design and field test of a galvanometer deflected streak camera

Ching C. Lai; David R. Goosman; James T. Wade; George R. Avara

doi:10.1117/12.516886

1 August 2003 Design and field test of a galvanometer deflected streak camera

Ching C. Lai, David R. Goosman, James T. Wade, George R. Avara

Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516886
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France

Abstract

We have developed a compact fieldable optically-deflected streak camera first reported in the 20th HSPP Congress. Using a triggerable galvanometer that scans the optical signal, the imaging and streaking function is an all-optical process without incurring any photon-electron-photon conversion or photoelectronic deflection. As such, the achievable imaging quality is limited mainly only by optical design, rather than by multiple conversions of signal carrier and high voltage electron-optics effect. All core elements of the camera are packaged into a 12" x 24" footprint box, a size similr to that of a conventional electronic streak camera. At LLNL's Site-300 Test Site, we have conducted a Fabry-Perot interferometer measurement of fast object velocity using this all-optical camera side-by-side with an intensified electronic streak camera. These two cameras are configured as two independent instruments for recording synchronously each branch of the 50/50 splits from one incoming signal. Given the same signal characteristics, the test result has undisputedly demonstrated superior imaging performance for the all-optical streak camera. It produces higher signal sensitivity, wider linear dynamic range, better spatial contrast, finder temporal resolution, and larger data capacity as compared with that of the electronic unit. The camera had also demonstrated its structural robustness and functional consistence to be well compatible with field environment. This paper presents the camera design and the test results in both pictorial records and post-process graphic summaries.

Citation Download Citation

Ching C. Lai, David R. Goosman, James T. Wade, and George R. Avara "Design and field test of a galvanometer deflected streak camera", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); https://doi.org/10.1117/12.516886

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