▎ 摘　　要

NOVELTY - Laser polarization direction detection device based on graphene nano-band array grating comprises a front plate and the back plate is connected by two upper and lower arc plates. A grating rotating table is arranged at the center of the front plate and a grating is arranged at the center of the grating rotating table. A synchronous rotating platform is provided at the center of the back plate and the synchronous rotating platform is connected with the grating rotating platform on the front plate through two rotating synchronous rods. The synchronous rotating table is provided with a Raman backscattered signal collection surface and the center of the Raman backscattered signal collection surface is provided with a laser incident port. USE - Used as laser polarization direction detection device based on graphene nano-band array grating. ADVANTAGE - The device detects lasers of any wavelength and has a wide application range; does not make any changes to the laser light path during use; is easy to use; performs real-time in-situ detection under the working state of the optical path and can be integrated into the required instrument as a detection tool. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for detecting laser polarization direction method based on graphene nano-band array grating. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the laser polarization direction detection device based on graphene nano-band array grating.