The Measurement of Spatial and Temporal Distribution of Radiation, Using a Talbot Spectrometer
Annual rept. no. 2
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF APPLIED PHYSICS AND INFORMATION SCIENCE
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A Simulation Game to train data processors in optimal data recovery techniques is included in this report. Also, the authors studied the triple- multiplexing response to a point source for a future scanning spectrometer. Three basic motions are required to modulate the wavelength and angular coordinates of the source. When performing preliminary experiments with the Multiplex Scanner, the authors discovered that the underlying Talbot effect is useful also for measuring phase objects. The theory of this new Talbot Interferometer is explored and experimental results of a candle flame are reported. For axially symmetric objects, this setup is modified by replacing the straight line gratings with circular gratings. In this way the radial gradient of the deformed wavefront is observed. Finally a means of simply, yet accurately collimating a light source using the Talbot Interferometer is described.
- Infrared Detection and Detectors