Electronic Image Readout Devices Used In Conjunction With Picosecond Streak Cameras

C. Cavailler; M. Genoud; N. Fleurot; J. Launspach; D. Mazataud; A. Mens

doi:10.1117/12.967999

1 February 1985 Electronic Image Readout Devices Used In Conjunction With Picosecond Streak Cameras

C. Cavailler, M. Genoud, N. Fleurot, J. Launspach, D. Mazataud, A. Mens

Proceedings Volume 0491, 16th Intl Congress on High Speed Photography and Photonics; (1985) https://doi.org/10.1117/12.967999
Event: 16th International Congress on High Speed Photography and Photonics, 1984, Strasbourg, France

Abstract

Understanding the laser-matter interaction experiments require a dynamic recording of the phenomena as well as a good knowledge of the laser pulse occuring during the irradiation of the target ; those measurements are made with streak cameras the increasing number of which leads to processing problems when the results are recorded on films. Furthermore, since physicists wish to have those temporal information immediatly, we unfolded automatic image readout devices fitted specially to streak cameras. The first one used an ISOCON tube operating with a slow sweep (0.5 s frame)1-2. The sensitivity of the tube was very good but its dynamic range was too limited when seeing pulsed images at low light level. So we developped two electronic readout chains with solid state devices which behave better for that kind of light. The first one was designed to get the most information along the temporal axis of the camera sweep (1024 points) in one or two spatial channels ; this device operates a linear 1024 photodiodes array the signal of which is digitized on 12 bits. We have obtained a temporal resolution better than 15 ps and a dynamic range over 500 ; this system is mainly useful to study laser pulses (rise time, temporal profile...)3. For applications requiring two dimension images, we studied and realized a device operating a CCD array and a fiber optics reducer (40-18 mm) adapting the image of the streak camera screen to the dimensions of the input fiber optics of the CCD. A comparison has been made on different CCD cameras on a test setup which simulates the experimental conditions, in order to choose the CCD which would fit the best for that purpose ; we present these results here, as well as those of the associated readout chains.

Citation Download Citation

C. Cavailler, M. Genoud, N. Fleurot, J. Launspach, D. Mazataud, and A. Mens "Electronic Image Readout Devices Used In Conjunction With Picosecond Streak Cameras", Proc. SPIE 0491, 16th Intl Congress on High Speed Photography and Photonics, (1 February 1985); https://doi.org/10.1117/12.967999

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