Precision synchronous polarimeter with linear response for the measurement of small rotation angles.
A synchronous polarimeter was set up for the measurement of small rotation angles of the polarization plane of light. The polarimeter is based on a polarizer-Faraday modulator-analyzer structure with a synchronous detection scheme, which produces a linear system response. The theoretical background is studied, and the system performance is investigated experimentally. We achieved an accuracy of the order of 10(-4) deg, or 5 mg/dl of glucose in a 1-cm light path.
Arnaud
A
A
Instituto de Ingeniería Eléctrica, Facultad de Ingeniería, J Herrera y Reissig 565, 11300 Montevideo, Uruguay. aarmaud@fimg.edu.uy
Silveira
F
F
Frins
E M
EM
Dubra
A
A
Perciante
C D
CD
Ferrari
J A
JA