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New Center infrared nonlinear optical crystals of BaGa2GeX6(X=S, Se) are actually synthesized. The buildings of both equally BaGa2GeS6 and BaGa2GeSe6 were identified being isomorphous exhibiting A 3-dimensional framework produced from the parallel alignment of Ga or Ge tetrahedron groups alongside the c-aix. The ultraviolet transmittance spectrum signifies the small-wavelength absorption edges of BaGa2GeS6 and BaGa2GeSe6 are 380 nm and 440 nm, respectively.
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The dislocations are traced with the repetition of etching from epitaxial layer for the interface. The results exhibit that dislocations while in the substrates are expected to bend alongside the way typical to the epitaxial expansion direction with the interface.
A thermo-optic dispersion system for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e six nonlinear crystal is documented. The experimentally established temperature-dependent period-matching problems for second-harmonic and sum-frequency era of Nd:YAG laser-pumped KTiOPO4 rm KTiOPO _4 K T i O P O 4 (KTP) and RbTiOAsO4 rm RbTiOAsO _4 R b T i O A s O four (RTA) optical parametric oscillators as well as a CO2 rm CO _2 C O 2 laser and its harmonics within the 0.
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ZnGa2Se4, a nonlinear materials with huge mid infrared transparency and great thermomechanical Houses
Laser-induced hurt threshold in the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm within the nanosecond routine
The uniaxial nonlinear crystals BaGa2GeS6 and BaGa2GeSe6 are characterized regarding thermal diffusivity and distinct heat more than a temperature array of -90 to 250 °C for warmth propagation along and perpendicular into the c -axis.
It has been located the optical nonlinear coefficients d31 and d22 in LiNbO3 are of opposite signal, in disagreement using an before report by others. This is a crucial thought for optimizing nonlinear optical interactions in LiNbO3.
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The pump pulse Electrical power was managed by a variable diffraction attenuator. Its polarization was tuned by 90° using a half-wave plate more info mainly because it had to be ordinary wave during the BGGSe (when AGS crystal was employed, the signal beam polarization was tuned). The sign beam was centered by spherical mirror (M2, the focal length of two m) into a fuel tube of 1.
The character of this instability and DFG Strength lower just isn't obvious for us. Among the reasons can be similar which has a nonlinear absorption and plasma formation, respectively, that triggers reflection/scattering/absorption from the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Power is introduced in Fig.