High-light-transmittance deep-freezing laser impact head and laser impact system

The invention relates to a high-light-transmittance deep-freezing laser impact head and laser impact system suitable for deep freezing laser impact technology. The temperature-insulation ceramic/plastic and vacuum temperature-insulation method are utilized to prevent water in air from being adsorbed onto high-transmittance glass due to low temperature and solve the problem that liquid nitrogen vapor can not be light-transmitting, thereby ensuring the light beam quality in the deep-freezing laser impact process. The high-light-transmittance deep-freezing laser impact head is characterized by comprising an upper end cover, a main body, a lower end cover, high-transmittance glass, a heat-insulation ceramic/plastic and other core components. The high-light-transmittance deep-freezing laser impact head ensures the light beam to smoothly reach the sample surface in the deep-freezing laser impact process, effectively enhances the light transmittance of the laser, has the advantage of simple structure, and is easy to implement.