Investigation of the spatial coherence of an extended light source

VP5.3.1.9
Investigation of the spatial coherence of an extended light source
Investigation of the spatial coherence of an extended light source

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Description

The experiment P5.3.1.9 explores the condition for spatial coherence. The light source is a single slit of variable width illuminated by a Hg spectral lamp. Combined with a filter this results in a monochromatic light source with variable width a. At a distance L double slits of different distances of the slits g (and fixed slit width b) are illuminated. For each distance g the width a of the adjustable single slit is determined where the interference pattern after the double slit vanishes. Then, the coherence condition is no longer fulfilled.

Components of equipment sets

1 451062  8  Spectral lamp, Hg 100 LD
1 45116  8  Housing for spectral lamps LD
1 45130  4  Universal choke, 230 V, 50 Hz LD
1 46032  8  Optical bench with standardised profile, 1 m LD
2 460370  8  Optics rider, 60/34 LD
1 460373 Optics rider, 60/50 LD
3 460374  8  Optics rider, 90/50 LD
1 46883 Interference filter 546 nm, 50 x 50 mm² LD
2 46022  4  Holder with spring clips LD
1 688045  8  Sliding diaphragms, set of 6 LD
1 46014  8  Adjustable slit LD
1 46985  4  Diaphragm with 4 double slits of different slit spacing LD
1 46002  4  Lens in frame, f=50 mm LD
1 460135  8  Ocular with scale LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P5.3.1.9 Investigation of the spatial coherence of an extended light source
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