Crystal Physics Group

Crystal growth laboratory

Recent research topics:

  • LiNbO3 - doped and undoped congruent and stoichiometric lithium niobate
  • K3Li2Nb5O15 and K3LiNb6O17 - doped and undoped  potassium lithium niobate in various compositions
  • TeO2 - tellurium dioxide (paratellurite)
  • Bi2TeO5 - doped and undoped bismuth telluride
  • â-Ba2B2O4 - â-barium metaborate
  • Li2B4O7 - lithium tetraborate
  • CsLiB6O10 - cesium lithium borate
  • Y/GdAl3(BO3)4 - yttrium aluminium borate and gadolinium aluminium borate doped with rare earth ions
  • Li6Y(BO3)3 and Li6Gd(BO3)3 - lithium yttrium borate and lithium gadolinium borate

Bulk crystal Produced crystals

 

Sample preparation in special sizes and orientations is available on the spot, e.g. prisms of stoichiometric lithium niobate for producing high energy terahertz pulses:

Optical prisms made from LiNbO3 crystal Optical prisms made from LiNbO3 crystal

Instrumentation:

  • Computer controlled Czochralski growth systems for crystals with melting point up to 1400 oC
  • Automatic diameter controlled systems for top seeded solution growth for crystals with melting point up to 1200 oC
  • Vertical Bridgman growth system up to 1000 oC
  • X-ray diffractometers (Secasi single crystal diffractometers, Philips diffractograph)
  • Grinding and polishing machines
  • Diamond blade cutting machines
  • Surface and stereo microscopes

Computer controlled Czochralski growth system