Abstract
Up-gradation of modern era photonic devices encourages modelling of nonlinear optical crystal that embraces excellent linear–nonlinear optical properties. Hence, this is the first effort in the literature to improve the optical performance of zinc tris-thiourea sulphate (ZTS) crystal using
l
-tyrosine (Ty). The energy-dispersive spectroscopy is used to determine the incorporation of Ty. Single-crystal XRD analysis is employed to determine the structural parameters. The 5% increase in transmittance of ZTS crystal due to Ty has been evaluated by UV–visible study. Kurtz–Perry test confirmed that frequency doubling ability of Ty-ZTS crystal is 1.71 times higher than ZTS. The occurrence of photoluminescence nature has been investigated within visible region. The noticeable change in third-order nonlinear optical refraction (from negative to positive) and absorption (from reverse saturable absorption to saturable absorption) profile of ZTS crystal facilitated due to Ty has been explored. The Z-scan data has been accessed for comparative evaluation of n
2
, β and χ
3
of pure and Ty-ZTS crystal. The n
2
, β and χ
3
of Ty-ZTS crystal is of order 10
–8
, 10
–4
, 10
–3
while that of ZTS is 10
–12
, 10
–4
, 10
–4
, respectively.