Premium
Growth of Inclusion Free KTP Crystals by Top Seeded Solution Growth and their Characterization
Author(s) -
Kannan C. V.,
Ganesamoorthy S.,
Kumaragurubaran S.,
Subramanian C.,
Sundar R.,
Ramasamy P.
Publication year - 2002
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200210)37:10<1049::aid-crat1049>3.0.co;2-f
Subject(s) - ferroelectricity , materials science , crystal (programming language) , growth rate , second harmonic generation , flux method , crystal growth , absorption (acoustics) , resistive touchscreen , analytical chemistry (journal) , dislocation , wavelength , seeding , polar , optics , crystallography , single crystal , chemistry , optoelectronics , composite material , thermodynamics , dielectric , mathematics , laser , computer science , engineering , geometry , chromatography , programming language , physics , electrical engineering , astronomy
KTiOPO 4 single crystals of dimensions 34 × 15 × 15 mm 3 have successfully been grown by Top Seeded Solution Growth (TSSG), using phosphate flux (K 6 P 4 O 13 ), employing a home made vertical cylindrical three zone resistive heated furnace. Growth experiments were carried out with <001> seed orientation. A method to grow inclusion free crystal with less dislocation density is proposed, by employing cooling rate of 0.5‐2 K/day and rotation rate of 60‐30 rpm. UV‐VIS transmission studies were performed and the dependence of absorption coefficient with wavelength is discussed. SHG elements of dimension 8 × 7.5 × 7.5 mm 3 were fabricated and conversion efficiency of 58 % was achieved without antireflection coating. Nature of ionic conductivity and ferroelectric phase transition behavior of KTP crystals along the crystallographic polar axis in the frequency range of 100 Hz – 10 MHz are discussed.