Crystal Research and Technology
Cryst. Res. Technol. 41, 1180 (2006) - Abstract -

Effect of rhodium incorporation in KTiOPO4 single crystals grown from self-flux

I. Bhaumik, S. Ganesamoorthy, R. Bhatt, A. K. Karnal, R. Sundar*, and V. K. Wadhawan**

Crystal Growth Laboratory, Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
*Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
**Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India

Keywords potassium titanyl phosphate, KTP, top-seeded solution growth (TSSG), ferroelectric materials, nonlinear-optical materials
PACS 61.50.C, 81.10.H
DOI 10.1002/crat.200610745

The presence of an impurity like rhodium in the platinum crucible used for the growth of KTiOPO4 (KTP) single crystals can have severe consequences in the performance of devices made from these crystals. In the present study the effect of rhodium incorporation has been investigated. Rhodium-incorporated KTP crystals have a lower ionic conductivity (1.3 x 10-7 S/cm at 100 kHz) than pure KTP crystals (3.5 x 10-6 S/cm at 100 kHz) along the c-axis. And the optical absorption in the green-wavelength regime leads to a detrimental effect on their SHG performance.




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