INTERACTION OF LASER RADIATION WITH MATTER : Study of the formation of a microrelief on ZnSe- and CdSe-crystal surfaces ablated by excimer KrF-laser radiaton. (1st November 2016)

• Record Type: Journal Article
• Authors: Vartapetov, S K; Zakhryapa, A V; Kozlovsky, V I; Korostelin, Yu V; Mikhailov, V A; Podmar'kov, Yu P; Porofeev, I Yu; Sviridov, D E; Skasyrsky, Ya K; Frolov, M P; Yutkin, I M
• Is Part Of: Quantum electronics. Volume 46:Number 10(2016)
• Page Start: 903
• Page End: 910
• Publication Date: 2016-11-01
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL16155
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: One-dimensional gratings with a period of 0.5 – 2.3 μm are formed on the surfaces of CdSe and ZnSe crystals ablated by two interfering radiation beams of a nanosecond excimer KrF laser. Investigated are the dependences of the shape and depth of gratings on the energy density under irradiation by a single pulse, and on the number of pulses at a given energy density. The maximum grating depth is estimated as ∼0.57 of the period. By forming a one-dimensional grating with a period of 1.5 μm and a depth of 0.53 μm on the CdSe-crystal surface, this surface becomes antireflective at a wavelength of 4 μm. The surface reflectivity is reduced by 88%. A possibility of forming two-dimensional gratings having periods of 1 and 1.5 μm is demonstrated.