Development of a TR-MOKE Setup for the Investigation of Ultrafast Magnetization Dynamics in Magnetic Thin Films

Ultrafast magnetization dynamics study in nano-scale is nowadays an important field because of the increasing interest in magnetic storage systems, fast magnetic switching, and more over magnonic devices and spintronic devices. For this purpose, the study of spin wave dynamics along with ultrafast demagnetization is crucial. Time Resolved Magneto Optic Kerr Effect (TRMOKE) is a very efficient and non destructive experimental procedure to follow the study. Here in our work, we have established the microscopic TRMOKE setup in our lab with a dual-color pump-probe mechanism. We have experimental evidence of its success in producing magnetic Kerr signal with delay time. We used Ni thin film as ferromagnetic sample prepared in the EBV process.