Overview
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Noël FLEUROT: Doctorate in physical sciences (electronic engineering) Commissariat à l'Énergie Atomique (CEA-DAM) Bruyères le Châtel
INTRODUCTION
In order to break down the movements of objects too fast to be captured by the eye, optical cinematography has since its origins
In the 1950s, analysis times ranging from the millisecond to the microsecond range became accessible for the most sophisticated specific equipment of the time. Many industrial applications correspond to this time range.
In the 1960s, these optical cameras gradually reached their ultimate resolution limits. They then gave way to electronic cameras, which were temporally more resolving, implementing double photon-electron and then electron-photon conversion in an electron tube known as an "image converter". The increased speed brought about by electronic manipulation of the intermediate image gives access to the microsecond (10 -6 s) to picosecond (10 -12 s) range for standard cameras, opening up a particularly vast field of applications at laboratory level.
The most powerful cameras currently achieve a time resolution of around a few hundred femtoseconds (1 femtosecond = 10 -15 s) in so-called "slit scan" mode, which is still two to three orders of magnitude above the shortest light pulses currently produced.
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Ultra-fast cinematography
References
Works
Manufacturers, suppliers
(non-exhaustive list)
High-speed electronic cameras and image converter tubes
Cordin http://www.cordin.com
Hamamatsu Photonics France http://www.hamamatsu.com
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