Study on Mechanism of Polishing Sapphire Crystal by Laser
Single sapphire crystal is an important optical element and semiconductor substrate material, widely used in industry, national defense and scientific research, etc.But, high hardness and good chemical stability of the sapphire make it hard to be polished by applying mechanical chemical polishing and other contact methods.Therefore, laser polishing will be one of polishing methods which are supposed to replace contact method polishing sapphire.This essay, based on the summary of the study on laser polishing mechanism and technique of processing sapphire by laser, from the perspective of the interaction mechanism of the laser and the substance, analyzes in theory the interaction of laser and sapphire during the sapphire is polished by the short-wave length laser.Experiments proved that under the cases of 20mJ and 40mJ laser energy when green laser polishes sapphire, the main material removal mechanism is fracture, at the same time, light melt mechanism exists.
laser sapphire crystal polishing mechanism single crystal
Pang Guoxing Chen Zhiyong Li Zhonglei Wang yanjie
Department of material engineering North China Institute of Aerospace Engineering langfang,Hebei,China 065000
国际会议
厦门
英文
133-137
2011-07-08（万方平台首次上网日期，不代表论文的发表时间）