Download presentation
Presentation is loading. Please wait.
1
Measuring Magnetic Field with Light Presentation of Thesis for the Masters of Science Degree by Andreas Danielsson
2
The Zeeman Effect Field off No splitting Field on Zeeman triplet
3
The Zeeman Triplet and Its Polarization
4
Information Carrier Orientation of B encoded in the polarization Magnitude of B encoded in the frequency separation Polarimeter to analyze the polarization states Interferometer to analyze the frequency information
5
MOSS-signal polarizer modulating birefringent crystal polarizer detector light in
6
The MOSS
7
Interferogram for the component for the two components
8
Switching between the linear components Contrast modulation
9
Interferogram for the two –components separately Solid line -lower frequency Dashed line -higher frequency
10
Switching between the circular components Phase modulation Contrast modulation
11
I = I 0 /2(1+s. p) s = (s 1, s 2, s 3 ) p = (cos sin sin 1, sin 2 cos 1 ) Select s 1, s 2 or s 3 by appropriate choice of p. Polarimeter
12
Stokes Vectors S =.5 (sin 2 cos 2 sin 2 sin 2 ) S =.25 (-sin 2 cos 2 -sin 2 sin 2 -2 cos ) S =.25 (-sin 2 cos 2 -sin 2 sin 2 cos )
13
The Zeeman Spectrometer
14
Raw Signal for Linear Polarization field off field on
15
Raw Signal for Circular Polarization = 75 o field on = 105 o field on
16
Magnet close up
17
The real thing
18
All the stuff
19
Demodulation Algorithm (8f) f Frequency spectra MOSS carrier Polarimeter sidebands Demodulation routine in LabView gives field strength and angles in real time.
20
Spectrometer B vs Hall probe B
21
Constant tilt angle as B increases
22
Measurement of tilt angle
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.