Speed measuring device and method based on single laser beam resonance multi-photon ionization

• Main Authors: LUO KAI, CHEN XIYU, WANG YEJUN, WANG QIU, ZHAO WEI
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2024
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; PHYSICS; TESTING

The invention provides a speed measuring device and method based on single laser beam resonance multi-photon ionization. The testing device comprises a pump laser, a dye laser, a frequency doubling crystal, a high-reflectivity plane lens, a laser beam expander module, a focusing convex lens, a testing area, an image enhancement type camera and a computer. The dye laser receives the laser output by the pump laser, tunes and amplifies the laser, and outputs the laser to the frequency doubling crystal for frequency doubling; the high-reflectivity plane lens receives the laser beam output by the frequency doubling crystal, reflects the laser beam and outputs the laser beam to the laser beam expander module for shaping treatment; the focusing convex lens receives the laser beam output by the laser beam expander module and focuses the laser beam on a test area; the computer is located on the outer side of the test area and electrically connected with the image enhancement type camera. The method is reasonable in co