Water-jet guided laser coupling device based on self-focusing mirror

• Main Authors: HUANG PING, JIAO HUI, ZHOU JIA, LONG YUHONG, WEI CHANGLONG, ZHANG ZHENJIE, ZHAO ZHEN, LIN ZE, ZHOU LIAO, ZHANG GUANGHUI, HUANG YUXING
• Format: Patent
• Language: Chinese; English
• Published: 13.12.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The utility model provides a water-guided laser coupling device based on a self-focusing mirror. The water-guided laser coupling device sequentially comprises a light transmission system, a water-light coupling system and a gas-liquid composite system from top to bottom, the optical transmission system comprises an optical fiber protection layer, an optical fiber, a QBH optical fiber connector and a self-focusing lens, the transmission efficiency of laser is guaranteed, and interference of reflected light on a light source is avoided. The lower end of the self-focusing mirror is in an arc shape with a certain radian and is immersed in the thin water layer, so that the coupling efficiency is improved; the nozzle is in an arc shape with a certain radian and is matched with the self-focusing mirror, the distance between the self-focusing mirror and the upper surface of the center of the nozzle is shortened, it is guaranteed that the thickness of a thin water layer is unchanged, and water-light efficient coupling