Design of high-performance and tunable magneto-optical isolators for He–Ne laser

Abstract

Herein, we report on high-performance magnetophotonic crystal (MPC) structures, which can be adjusted to create perfect magneto-optical isolators (MOIs) for helium-neon lasers operating at a wavelength of 632.8 nm. The adjustment is carried out by tuning the applied magnetic field to use the high potential of the CeF 3 as a new and transparent visible Faraday rotator. For practical purposes, to avoid instabilities due to wavelength fluctuations, we show that achieving a suitable tunable MOI with a flat-top response is possible when the appropriate MPC design is approached.