Next Article in Journal
Multifunctional Molecular Magnets: Magnetocaloric Effect in Octacyanometallates
Next Article in Special Issue
Bismuth-Based Oxyborate Piezoelectric Crystals: Growth and Electro-Elastic Properties
Previous Article in Journal
Reversed Crystal Growth
Article Menu

Export Article

Open AccessArticle
Crystals 2019, 9(1), 8; https://doi.org/10.3390/cryst9010008

Twins in YAl3(BO3)4 and K2Al2B2O7 Crystals as Revealed by Changes in Optical Activity

1
FEE GmbH, Struthstr. 2, 55743 Idar-Oberstein, Germany
2
Division of Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA
3
Hochschule Trier, Umwelt-Campus Birkenfeld, Campusallee, 55768 Hoppstädten-Weiersbach, Germany
*
Author to whom correspondence should be addressed.
Received: 7 December 2018 / Revised: 19 December 2018 / Accepted: 20 December 2018 / Published: 22 December 2018
(This article belongs to the Special Issue Crystal Growth of Multifunctional Borates and Related Materials)
Full-Text   |   PDF [9841 KB, uploaded 22 December 2018]   |  

Abstract

Many borate crystals feature nonlinear optical properties that allow for efficient frequency conversion of common lasers down into the ultraviolet spectrum. Twinning may degrade crystal quality and affect nonlinear optical properties, in particular if crystals are composed of twin domains with opposing polarities. Here, we use measurements of optical activity to demonstrate the existence of inversion twins within single crystals of YAl 3 (BO 3 ) 4 (YAB) and K 2 Al 2 B 2 O 7 (KABO). We determine the optical rotatory dispersion of YAB and KABO throughout the visible spectrum using a spectrophotometer with rotatable polarizers. Space-resolved measurements of the optical rotation can be related to the twin structure and give estimates on the extent of twinning. The reported dispersion relations for the rotatory power of YAB and KABO may be used to assess crystal quality and to select twin-free specimens. View Full-Text
Keywords: NLO crystals; frequency conversion; second harmonic generation; YAB; YAl3(BO3)4; KABO; K2Al2B2O7; optical activity; optical rotatory dispersion; inversion twin NLO crystals; frequency conversion; second harmonic generation; YAB; YAl3(BO3)4; KABO; K2Al2B2O7; optical activity; optical rotatory dispersion; inversion twin
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Buchen, J.; Wesemann, V.; Dehmelt, S.; Gross, A.; Rytz, D. Twins in YAl3(BO3)4 and K2Al2B2O7 Crystals as Revealed by Changes in Optical Activity. Crystals 2019, 9, 8.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top