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Differential photodiode detector for a shock tube laser schlieren system

1974; American Institute of Physics; Volume: 45; Issue: 6 Linguagem: Inglês

10.1063/1.1686734

1527-2400

Gerald J. Diebold, Robert J. Santoro,

Advanced Optical Sensing Technologies

A fast photodiode recording system is described for use in a shock tube laser schlieren system. This device is relatively inexpensive, has a superior signal-to-noise ratio, is insensitive to ripple in the light source, and provides a convenient calibration correction for long term variations in laser intensity. Measurements of both relaxation and dissociation behind shock waves have been carried out using this device.