Abstract
We review the progress in the investigation of the Verdet constant of new magneto-active materials for the Faraday-effect-based devices used in high-power laser systems. A practical methodology for advanced characterization of the Verdet constant of these materials is presented, providing a useful tool for benchmarking the new materials. The experimental setup used for the characterization is a flexible and robust tool for evaluating the Faraday rotation angle induced in the magneto-active material, from which the Verdet constant is calculated based on the knowledge of the magnetic field and the material sample parameters. A general model for describing the measured Verdet constant data as a function of wavelength and temperature is given. In the final part of this review, we present a brief overview of several magneto-active materials, which have been to-date reported as promising candidates for utilization in the Faraday devices. This overview covers room-temperature investigations of the Verdet constant of several materials, which could be used for the ultraviolet, visible, near-infrared and mid-infrared wavelengths.
Highlights
IntroductionThe Faraday effect (or magnetic circular birefringence) is one of the fundamental magneto-optical phenomena emerging from the interaction of light and matter subjected to a magnetic field
We review the results of the room-temperature investigations of the Verdet constant of several yet-reported magneto-active materials for Faraday devices (FDs)
The main goal of this paper is to update the available reviews and to provide the needed summary of several recently reported Verdet constant investigations of magneto-active materials developed for the high-power FDs operating from the ultraviolet to mid-infrared wavelengths
Summary
The Faraday effect (or magnetic circular birefringence) is one of the fundamental magneto-optical phenomena emerging from the interaction of light and matter subjected to a magnetic field. This effect manifests itself in the magnetized medium as a circular anisotropy, which is an outcome of the longitudinal. The left-hand(−) circularly polarized waves with a definite phase difference) undergoes rotation of the polarization plane as it propagates through the medium because of the different propagation velocities of the +/− waves.
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