Second harmonic generation in fresnoite, Ba2TiSi2O8

Bechthold, P. S.; Haussühl, S.; Michael, E.'; Eckstein, J.; Recker, K.; Wallrafen, F.

doi:10.1016/0375-9601(78)90469-3

Cited by 57 publications

(21 citation statements)

References 15 publications

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“…Among the several structures, the fresnoite structure appears to be most promising in terms of a large SHG response, although fresnoite (Ba TiOSi O ) itself su!ers from a small double refraction that does not allow phase-matched SHG (18). Investigation of isostructural derivatives of the fresnoite structure containing d cations together with a di!erent combination of other constituents is likely to yield new NLO materials with phase-matched SHG response.…”

Section: Bamentioning

confidence: 94%

“…7). Considering that fresnoite is a potential NLO structure (18,19), we believed that it is important to establish the role of square-pyramidal TiO toward SHG properties. In view of the foregoing, we prepared and examined several members of borates, silicates, and phosphates of the above-mentioned structure types containing NbO /TiO octahedral chains as well as isolated TiO square pyramids and examined their SHG response toward 1064-nm laser radiation.…”

Section: Introductionmentioning

confidence: 99%

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In Search of Inorganic Nonlinear Optical Materials for Second Harmonic Generation

Gopalakrishnan

Ramesha

Rangan

et al. 1999

Journal of Solid State Chemistry

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Section: Bamentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

In Search of Inorganic Nonlinear Optical Materials for Second Harmonic Generation

Gopalakrishnan

Ramesha

Rangan

et al. 1999

Journal of Solid State Chemistry

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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%

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%