公开(公告)号：US12183535B2

公开(公告)日：2024-12-31

申请号：US17749360

申请日：2022-05-20

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Peng Zhang ,  Lin Wu ,  Xiao Xiong ,  Yang Zhou

IPC: H01J1/34 ,  H01J23/04 ,  H01J25/34 ,  H01J37/073 ,  H01J37/26 ,  H05H7/02 ,  H05H7/22 ,  H05H9/00 ,  H05H15/00

Abstract: A dielectric coated plasmonic photoemitter is provided. An aspect of the present photonic apparatus includes a conductive photoemitter including a dielectric material coating or layered on a metallic core. The dielectric material being configured to enhance a local optical field strength and current density of the photoemitter as compared to a bare photoemitter without the dielectric layer. The dielectric layered photoemitter being tunable to transmit photoemissions from corners thereof with different photonic characteristics depending on a laser wavelength pulse received.