Babinet compensator

Lagorceix, H., Reynaud, R, 1995, Squeezing highly Birefringent Fiber for an Accurate Nondestructive Determination of Principal-Axis Orientation along the Waveguide application to Fiber Babinet Compensator Implementations Optical Fiber Technology 1, 171... 

The Babinet compensator is a calibrated optical device comprising two wedge-shaped pieces of quartz arranged so that their optic axes, and the light path, are... 

Some attention has to be given to the degree of circular polarization y and thus to the creation of cpl. Two experimental principles are common the use of a quarter wavelength plate and the use of a Fresnel rhomb or a Solcil-Babinet compensator in a few experiments, radiation from a cyclotron after passage through a polarizing undulator was used. The degree of circular polarization is easily jeopardized when a X/4 plate is employed, as this is an interference device... 

Fig. 10. Diagram aiding in the explanation of the Babinet compensator technique of measuring birefringence...

Other Analyses. Birefringence measurements using a Babinet compensator were made on the SBS films to detect changes in the orientation of the molecules. 

The formula for calculating retardation, A, with the Babinet compensator is ... 

A synchronously pumped DCM dye laser was used as the picosecond light source in the pump-probe experiments. A Soleil-Babinet compensator in the excitation beam was set so that the polarization of the excitation and probe beams were parallel or perpendicular. Fluorescence anisotropies were measured with a Spex fluorolog spectrometer. The time resolved fluorescence was measured by single photon counting. 

The Babinet compensator is two quartz wedges of opposite sign mounted one above the other. One is fixed, the other movable with a micrometer. Range is 2000 nm. 

FIG. 5-14. Stroboscope photograph of a wave of shear strain double refraction in a 1% solution of sodium deoxyribonucleate at 2S°C, frequency 125 Hz. The driving plate is oscillated vertically shear waves propagated horizontally to the right produce patterns of strain double refraction. Each boundary between black and white provides the same information the inclination of the base lines is specified by the angle between the axes of the Babinet compensator and the analyzing Polaroid (from reference 117). ... 

Figure 9.8 Babinet compensator which consists of two quartz wedges with crossed optical axes.

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