Strahllenkungsvorrichtung und Verfahren zur Räumlichen Lenkung eines Lichtstrahls

Details

Veröffentlichungs-Nr.

EP4086675

Aktenzeichen

EP21172767

Anmeldetag

7. Mai 2021

Veröffentlichung

27. August 2025

Erteilung

27. August 2025

Rechtsraum

EP

IPC

G02B6/12G02F1/295G02B6/34// G01S7/481G01S17/42

Abstract

A beam-steering device 100 for spatial steering of a light beam comprises a waveguide array 10 being arranged on a substrate 50 and comprising a waveguide array input 12, multiple waveguides 14-1, 14-2, ..., 14-i and a waveguide array output 16, wherein the multiple waveguides 14-1, 14-2, ..., 14-i are adapted for simultaneously guiding light from the waveguide array input 12 to the waveguide array output 16 and for forming a light beam downstream of the waveguide array output 16 by superimposing the light guided by the waveguides 14-1, 14-2, ..., 14-i, a phase shifter device 18 being arranged for applying controlled phase shifts to the light guided in each of the waveguides 14-1, 14-2, ..., 14-i, and a grating array 22 including at least one patterned grating in optical communication with the waveguide array output 16, the grating array 22 being configured to radiate the light beam out of the beam-steering device 100 to a surrounding, wherein the waveguide array output 16 is arranged such that the light beam is formed downstream of the waveguide array output 16 with a main lobe and side lobes and with a beam angle φ in a plane of the substrate 50, that is determined by the controlled phase shifts applied to the light by the phase shifter device 18 and a wavelength of the light, a slab propagation region 20 is arranged between the waveguide array output 16 and the grating array 22 such that the main lobe of the light beam is angularly relayed to the grating array 22 and the side lobes of the light beam leave lateral sides of the slab propagation region 20 before reaching the grating array 22, and the grating array 22 is arranged to radiate the light beam out of the beam-steering device 100 with a first angular direction with respect to the substrate 50, that is determined by the beam angle φ. Furthermore, a method of beam-steering a light beam is described.

Anmelder

Firmen

Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.
University of Toronto

Land

🇩🇪 Deutschland

Fachgebiete