Abstract :
In this study, antireflection coatings were designed and simulated, optical reflection values deduced with a matrix formulation via computer program was written in matlab (Ver.7), a five materials were selected to reduce reflection from the surface of glass optical system which is using in single , double and triple frequency of laser Nd-YAG . The results show, In single layer antireflection coating, the reflection have been reduced but only one or two minima reflection, In double layer antireflection coating, two zero reflection were found at wavelengths of the laser Nd-YAG, In three layer antireflection coating the best results were found, two minima reflection were found at (532,1064 nm) and zero reflection at (355 nm) it is agreement with condition design
