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Polarisation control through an optical feedback technique and its application in precise measurements.


ABSTRACT: We present an anisotropic optical feedback technique for controlling light polarisation. The technique is based on the principle that the effective gain of a light mode is modulated by the magnitude of the anisotropic feedback. A new physical model that integrates Lamb's semi-classical theory and a model of the equivalent cavity of a Fabry-Perot interferometer is developed to reveal the physical nature of this technique. We use this technique to measure the phase retardation, optical axis, angle, thickness and refractive index with a high precision of λ/1380, 0.01°, 0.002°, 59 nm and 0.0006, respectively.

SUBMITTER: Chen W 

PROVIDER: S-EPMC3683672 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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