Optics

 

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University of Bath

Dept. of Physics

 

 

 

Contents:

Berek polarization compensator
BK7 glass transmission curves
Fused silica (fused quartz) transmission curves
Photoelastic modulator calibration
Acousto-optic modulators

Berek polarization compensator plate

Berek Polarization Compensator (New Focus) manual from the New Focus web site.
Berek Polarization Compensator: Maple code to calculate indicator settings

Transmission curves of optical glasses

Above: transmission curve of BK7 glass (most of our lenses are BK7). Note: fine for Innova 400 in the UV but no good for FRED laser! This graph "borrowed" from the Esco Products web site. 

Above: transmission curve for fused silica (blue). This graph "borrowed" from the Präzisions Glas & Optik GmbH web site (PGO-online). 

Photoelastic modulator

Calibration of our older (non-interfaced) photoelastic modulator by Alexei Gurevich. 

Newport Acousto-optic modulators

N21080-1SAS AOM driver (the small one)
N24080 AOM (flint glass; use for visible wavelengths; the small one)
N30085-3A AOM driver (the big one)