Speaker
Description
Spin-polarized electron sources can provide magnetic and spin-dependent information about materials and systems with nanoscale resolution. We present a theoretical design to spin polarize free-electrons using an integrated photonics chip illuminated by lasers. The design consists of two interaction stages separated by a free space drift to induce spin-dependent features in the electron wavepacket. The first stage and drift section imparts spin-dependent bunch formation into the electron probability distribution, while the second stage rotates the spin-states of the structured spin-dependent wave-packet to create a highly polarized beam. The proposed device provides a compact, millimeter scale, on-axis method to impart net-polarization on an electron beam.