Abstract
RTP crystals doped with four different Ta concentrations were grown by high-temperature solution method.
Highlights
Ta dopants changed the growth habit of RTP and the (100) faces were more developed than the other crystal faces
The relative Ta atomic concentration in RTP:Ta crystals was calculated and it was determined that the molar ratio between Ta and Ti was higher than the nominal ratio
When the Ta concentration increased to 9 mol%, the specific heat of the doped crystal was 1.5 times that of pure RTP crystal at 300 C and SHG intensity was improved by 59% when compared with pure RTP
Summary
KTiOPO4 (KTP) family crystals have been widely used in many applications such as nonlinear optics, electro-optics (EO) and optical wave guide devices, owing to their high nonlinear optical properties, high electro-optical coefficients, high optical damage threshold, low dielectric constant, and high chemical stability.[1,2,3,4,5] RbTiOPO4 (RTP) is an isostructural analogue to KTP which belongs to the orthorhombic crystal system, space group Pna21.6 Compared to KTP, RTP crystals have lower conductivity, higher EO coefficient and higher damage threshold (1.8 times higher than that of KTP), which makes RTP more suitable for high-power applications.[7,33] Nowadays, RTP has been used as a commercial EO Q-switch.[8,9]Metal ion substitution of different cation positions in RTP basic framework can broaden the application of RTP crystals. RTP crystals doped with four different Ta concentrations were grown by high-temperature solution method. When the Ta concentration increased to 9 mol%, the specific heat of the doped crystal was 1.5 times that of pure RTP crystal at 300 C and SHG intensity was improved by 59% when compared with pure RTP.
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