Growth and physical properties of fresnoite Ba2TiSi2O8

Haussühl, S.; Eckstein, J.; Recker, K.; Wallrafen, F.

doi:10.1016/0022-0248(77)90006-9

Cited by 89 publications

(23 citation statements)

References 9 publications

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“…The ferroelastic phase transition of RbMnC1, is accompanied by several features which are observed on other crystals like the alkali cyanides ( HAUSSUHL et al 1977;HAUSSUHL, MICHAELIS 1979;HAUSSUHL 1979;LOIDL et al 1983), Ni(NO,),. 6 NH, (HAUSSUHL 1974), betaine borate (HAUSSUHL 1984), betaine hydrogen maleinate (HAUSSUHL 1988) and K, SeO, (REWALD et al 1980) where one of the elastic shear stiffnesses decreases quasi-linearly towards zero within a large range above the transition temperature.…”

Section: Discussionmentioning

confidence: 94%

Thermoelastic and Piezoelastic Properties of Hexagonal RbMnCl₃

Jeong

Haussühl

1991

Cryst. Res. Technol.

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Temperature and pressure derivatives of the elastic constants, indices of refraction, diclectric constants, Faraday erfect and thermal expansion of RbMnCI, near T, = 278 K confirm the existence of a second-order phasc transition. A strongly anomalous bchaviour is obscrved with the elastic shcar stiffncss c4,, which possesses a positive tempcraturc derivative and a ncgative pressurc derivative. Thcse properties and also the pressure derivative of the transition tempcrature, clTJdp = 6.2 K kbar-' closely rcsemble the anomalous behaviour of two other ferroelectric species, betainc borate and betainc hydrogen maleinate.

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Section: Discussionmentioning

confidence: 94%

Thermoelastic and Piezoelastic Properties of Hexagonal RbMnCl₃

Jeong

Haussühl

1991

Cryst. Res. Technol.

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“…Studies reporting on the transmittance and refractive indices in BTS over a series of wavelength ranges are also very scarce, except for data at limited specific wavelengths [10,20,21]. All of these data are very important for the design and application of BTS optical devices.…”

Section: Introductionmentioning

confidence: 99%

“…Based on its second-order optical nonlinearity, another feature of the BTS crystal is the electro-optic effect. Haussühl reported that BTS possesses a large electro-optical coefficient, which is of the same order of magnitude as that of KH 2 PO 4 , and so BTS is highly desirable for fabricating devices such as high-speed electro-optic modulators, optical shutters, and laser Q-switches which are used in the fields of laser modulation, optical communications and optoelectronics [10][11][12][13][14]. Furthermore, BTS has proved to be a novel stimulated Raman scattering active crystal, where the Raman gain is slightly greater than that of Ba(NO 3 ) 2 , and hence the crystal is suitable for solid-state Raman laser applications [15].…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of the Fresnoite Ba2TiSi2O8 Single Crystal

et al. 2017

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Abstract:In this work, using large-sized single crystals of high optical quality, the optical properties of Ba 2 TiSi 2 O 8 were systematically investigated, including transmission spectra, refractive indices and nonlinear absorption properties. The crystal exhibits a high transmittance (>84%) over a wide wavelength range from 340 to 2500 nm. The refractive indices in the range from 0.31256 to 1.01398 µm were measured, and Sellmeier's equations were fitted by the least squares method. The nonlinear absorption properties were studied by using the open-aperture Z-scan technique, with a nonlinear absorption coefficient measured to be on the order of 0.257 cm/GW at the peak power density of 16.4 GW/cm 2 . Such high transmittance and wide transparency indicate that optical devices using the Ba 2 TiSi 2 O 8 crystal can be applied over a wide wavelength range. Furthermore, the small nonlinear absorption observed in Ba 2 TiSi 2 O 8 will effectively increase the optical conversion efficiency, decreasing the generation of laser damage of the optical device.

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“…It is a rare mineral and showing noncentrosymmetric tetragonal structure of point group 4mm with space group C 2 4V -P4bm [2]. Due to the noncentrosymmetric crystal structure, this material shows good ferro, piezo, pyro as well as optical and other nonlinear properties useful for different practical devices [3][4][5][6][7][8][9][10]. The electromechanical coupling factor of single crystal grown by Czochralski method is large enough (k = 0.28) for piezoelectric devices and hence it could be exploited as an alternate substrate material for surface acoustic wave (SAW) devices [11,12].…”

Section: Introductionmentioning

confidence: 97%