Effect of High Energy Ion Irradiation on Electrical and Optical Properties of Organic Nonlinear Optical Crystals
Elsevier Journal - Vacuum, 48(12), 991-994.
Posted: 15 Nov 2017
Date Written: December 01, 1997
Two new organic nonlinear single crystals viz., Methyl hydroxy benzoate (MHB) and p-hydroxy Acetophenone (HAP) are irradiated with swift heavy ions Ag 100 MeV and Si 50–100 MeV, from the 15 UD pelletron at NSC Delhi. Hydrogen depth profiling was carried out by using ERDA technique. The effect of irradiation on the dielectric, nonlinear optical properties have been investigated. A dramatic increase in the value of the dielectric constant was observed in both MHB and HAP. The dielectric constants increased by 10–13 times. The refractive index values were also increased. However the second harmonic generation efficiency of these crystals were only marginally affected.
Keywords: Organic Nonlinear Single Crystals, Swift Heavy Ions Irradiation, Nonlinear Optical Properties, Second Harmonic Generation Efficiency
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