The KTiOPO4:Yb (KTP:Yb) crystal has been grown by flux growth at high temperature (similar to 1243-1223K). KTP:Yb crystallizes in the orthorhombic crystal system with Pna2(1) space group. Ytterbium presence was analyzed in the grown crystal by EDAX analysis. The existence of Ti3+ color center has been evaluated using electron paramagnetic spin resonance spectrum. The Raman spectroscopic techniques were used to study the effect of Yb3+ in KTP crystal. Thermal diffusivity, thermal conductivity and specific heat capacity of grown crystal were studied. At low frequency, the dielectric constant decreases sharply in the frequency region of 10(4) Hz. The electrical conductivity along the [001] is low (9.0435 x 10(-7) S/cm) for 60 kHz at 300 K. The temperature dependent variation of electric conductivity was found for [010] and [001] of KTP:Yb. The effect of Yb3+ doping in second harmonic generation of KTP was studied. (C) 2016 Elsevier B.V. All rights reserved.