Study on Ultra-Precise Machining of CLBO Crystal

Xun Lv; Ju Long Yuan; Yong Dai; Jia Jin Zheng; Zhao Zhong Zhou; Ping Zhao

doi:10.4028/www.scientific.net/KEM.304-305.398

Paper Titles

The Principle of Magnetic Abrasive Finishing under Rotating Electromagnetic Field and Its Application in Surface Finishing of Heavy Crankshaft
p.379

Experimental Study on Mechanism and Performance of Magnetic Abrasive Finishing
p.384

Modeling and Simulation of Lapping Processes Based on Grain Size Sensitivity Model
p.389

Study on the Technique of Pulse Electrochemical Mechanical Finishing
p.393

Study on Ultra-Precise Machining of CLBO Crystal
p.398

Study on Wear Mode of Silicon Nitride Balls in Lapping Process
p.403

Theoretical Research on Gear-Honing and Manufacturing Technology with Electroplated CBN Honing Wheel
p.408

Gloss Formation and Its Relationship with Roughness in Granite Grinding
p.413

The Influence of Structural Parameter on Resonance of the Vibrating Disk in Ultrasonic Honing System
p.417

HomeKey Engineering MaterialsKey Engineering Materials Vols. 304-305Study on Ultra-Precise Machining of CLBO Crystal

Study on Ultra-Precise Machining of CLBO Crystal

Abstract:

Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of the Nd:YAG fundamental laser wavelength. In order to enhance the damage threshold, low CLBO surface roughness, by ultra-precision machining, is needed. Because the CLBO crystal has easy hydroscopic reaction and micro scratches in machining, ultra-precise machining of the CLBO crystal is a difficult technical problem. In this paper, the new lapping slurry and polishing slurry are introduced. And the deliquescence degree of CLBO is fallen to lowest. A new working technology is also adopted. After rough polishing, the concentration of ultra-precision polishing slurry is increased properly. So does the ultra-precision polishing speed, and the wiping speed is faster than the deliquescence speed. The CLBO crystal surface roughness can achieve 1nm and keep the surface quality well.