Use of the Xybion ISG - Camera in the RETRA-1000 TV-Holography Unit.

摘要

A Xybion intensified CID-camera has been tested in the Retra 1000 TV-holography instrument. Apart from spurious oscillations in the amplifier chain, the camera - Retra combination was easy to use. Deformation and vibration fringe patterns of good quality were obtained both at room temperature and at object temperatures close to + 1500 C. The overall gain in light sensitivity was only marginal compared to standard video cameras. This somewhat unexpected result is due to the heterodyne recording in the holographic system where a strong reference wave with inherent low loss allows for detection of very low object intensities. The use of intensified cameras like the Xybion, is however, of interest for use in TV-holography due to the easy gating of the laser light which results in greater fringe stability and the possible attainment of very high object temperatures when combined with a pulsed laser. Keywords: Lasers, Video equipment, Holography, Speckle image, Intensifiers. (kt)