Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1996-06-13
1997-11-04
Font, Frank G.
Optics: measuring and testing
By particle light scattering
With photocell detection
356349, G01B 902
Patent
active
056845863
ABSTRACT:
An apparatus for characterizing a short optical input pulse is provided. The apparatus has an optical disperser and an analyzer. The optical disperser disperses the input pulse temporally to an extent adequate for the analyzer to analyze. The analyzer analyzes the intensity and phase characteristics of the dispersed pulse which is used to obtain the intensity and phase characteristics of the input pulse. The characteristics of the input pulse are obtained by mathematically back-propagating the dispersed pulse through the disperser. Preferably, the analyzer has a discriminator that splits the dispersed pulse into two portions that travel along two paths of unequal length and then collimating the two portions to obtain optical interference. By analyzing the optical interference, the intensity and the phase of the dispersed pulse can be determined.
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Fortenberry Rance M.
Sorin Wayne V.
Font Frank G.
Hewlett -Packard Company
Kim Robert
Yip Philip S.
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