Faraday cage

Magnetic field

Optics

Physics

Nanotechnology

Materials science

Programming language

Verdet constant

Faraday effect

Constant (computer programming)

Characterization (materials science)

Computer science

Optoelectronics

Quantum mechanics

Wavelength

Applied Sciences

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.

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices