Abstract
Two new organic nonlinear single crystals viz. methyl p-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 the ERDA technique. The effect of irradiation on the dielectric, nonlinear optical properties was 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 genaration efficiency of these crystals was only marginally affected.
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