Optical inhomogeneities in Li2B4O7 single crystals by S. Kar, S. Verma, and K. S. Bartwal

Crystal Research and Technology

Cryst. Res. Technol. 43, 438 (2008) - Abstract -

Optical inhomogeneities in Li₂B₄O₇ single crystals

S. Kar, S. Verma, and K. S. Bartwal

Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore – 452013, India

Keywords	lithium teterborate, etching, conoscopy, interferometry, transmittance
PACS	81.10.Fq, 81.10.-h
DOI	10.1002/crat.200710992

Lithium tetraborate, Li₂B₄O₇ (LTB) crystals were grown by Czochralski technique. It belongs to tetragonal system with lattice parameter a = b = 9.479 Å, c = 10.286 Å. Transmission range of this crystal is 170 nm – 3300 nm. This material has attracted much attention because of its application in higher harmonic generation of Nd:YAG laser and radiation dosimetry. The grown crystals were characterized for their optical inhomogeneity using etch pit study, hardness, conoscopy, interferometry, and UV-VIS transmittance techniques.

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