Revealing growth defects in non-linear borate single crystals by chemical etching

A. Péter, K. Polgár, E. Beregi

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Inorganic cyclic borates such as β-BaB2O4 (BBO), LiB3O5 (LBO), CsLiB6O10 (CLBO) and Li2B4O7 (LTB) are excellent non-linear optical (NLO) materials, particularly in the ultraviolet region. Another type of borate is YAl3(BO3)4 (YAB) which is utilized as a laser host and for self-frequency doubling. Growth imperfections causing scattering and absorption of laser beams affect the performance and the use of borate single crystals. Defects, like inclusions, twins, grain boundaries and dislocations form readily in crystals grown by both the high temperature top-seeded solution growth (HTTSSG) method (BBO, LBO, YAB) and the Czochralski technique (CLBO, LTB). Chemical etching methods have been developed on various planes of the different borate crystals, in order to reveal the nature and the distribution of these defects. These methods have successfully been used to characterize NLO borate crystals. The origins of lattice defect formation are discussed in terms of the growth parameters.

Original languageEnglish
Pages (from-to)102-109
Number of pages8
JournalJournal of Crystal Growth
Volume209
Issue number1
DOIs
Publication statusPublished - Jan 15 2000

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Borates
borates
Etching
etching
Single crystals
Defects
single crystals
defects
Crystals
crystals
Optical materials
Crystal defects
optical materials
Dislocations (crystals)
Laser beams
Grain boundaries
grain boundaries
laser beams
inclusions
Scattering

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Revealing growth defects in non-linear borate single crystals by chemical etching. / Péter, A.; Polgár, K.; Beregi, E.

In: Journal of Crystal Growth, Vol. 209, No. 1, 15.01.2000, p. 102-109.

Research output: Contribution to journalArticle

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AB - Inorganic cyclic borates such as β-BaB2O4 (BBO), LiB3O5 (LBO), CsLiB6O10 (CLBO) and Li2B4O7 (LTB) are excellent non-linear optical (NLO) materials, particularly in the ultraviolet region. Another type of borate is YAl3(BO3)4 (YAB) which is utilized as a laser host and for self-frequency doubling. Growth imperfections causing scattering and absorption of laser beams affect the performance and the use of borate single crystals. Defects, like inclusions, twins, grain boundaries and dislocations form readily in crystals grown by both the high temperature top-seeded solution growth (HTTSSG) method (BBO, LBO, YAB) and the Czochralski technique (CLBO, LTB). Chemical etching methods have been developed on various planes of the different borate crystals, in order to reveal the nature and the distribution of these defects. These methods have successfully been used to characterize NLO borate crystals. The origins of lattice defect formation are discussed in terms of the growth parameters.

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