Enhancement of the transversal magnetic optic Kerr effect: Lock-in vs. hysteresis method

The lock-inamplifier is often used to study the enhancement of themagneto-optical Kerr effect(MOKE) in the presence ofplasmonresonances. In the present work we show that it is possible to investigate such effect replacing the lock-inamplifier by a compensator, filter, and differentialamplifier. This allows us to extract the fullhysteresis loop in and out of theresonance without the need of a lock-inamplifier. Our results demonstrate these two setups are equivalent to study the enhancement of the transversalMOKE (T-MOKE) in magnetoplasmonic systems.

Source: Review of Scientific Instruments - October 28, 2016 Category: Physics Authors: Jorge Nicol ás Hayek, César A. Herreño-Fierro and Edgar J. Patiño Source Type: research