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two–10.8-µm wavelength region. Another essential limitation with the pump ability linked that has a thermal lensing influence in crystal was firm experimentally. A comparison was fabricated from AgGaSe2 and ZnGeP2 crystals as materials suited to the effective generation of the second harmonic of cw CO2 laser radiation.
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New middle infrared nonlinear optical crystals of BaGa2GeX6(X=S, Se) have been synthesized. The constructions of both BaGa2GeS6 and BaGa2GeSe6 were found to be isomorphous exhibiting a three-dimensional framework built from the parallel alignment of Ga or Ge tetrahedron teams along the c-aix. The ultraviolet transmittance spectrum suggests the quick-wavelength absorption edges of BaGa2GeS6 and BaGa2GeSe6 are 380 nm and 440 nm, respectively.
0 Summary Summary: BaGa4Se7 (BGSe) and BaGa2GeSe6 (BGGSe) crystals are novel infrared nonlinear optical materials independently created by Chinese scientists. Because of the superb comprehensive efficiency as well as the important application value in laser field, they've got captivated Substantially attention at your house and abroad.
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77Growth of The brand new large-overall performance NLO crystal BaGa2GeSe6 via the managed vapor tension method
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Specific emphasis will likely be given to The present technical restrictions and availability of pump laser attributes and nonlinear crystal properties. Read extra
A thermo-optic dispersion system for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e 6 nonlinear crystal is described. The experimentally identified temperature-dependent phase-matching ailments for second-harmonic and sum-frequency generation 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 4 (RTA) optical parametric oscillators as well as a CO2 rm CO _2 C O 2 laser and its harmonics from the 0.
$ rm BaGa _2 rm GeSe _6$ (BGGSe) is actually a freshly made nonlinear materials that is definitely eye-catching for ultrabroad frequency mixing and ultrashort pulse era due to its comparably reduced dispersion and large problems threshold. A numerical analyze shows the material’s potential for octave-spanning mid-infrared pulse generation up to 18 µm. In a primary experiment, we present that a protracted crystal duration of two.
The more info pump pulse Strength was managed by a variable diffraction attenuator. Its polarization was tuned by 90° that has a fifty percent-wave plate since it needed to be normal wave while in the BGGSe (when AGS crystal was utilized, the signal beam polarization was tuned). The sign beam was concentrated by spherical mirror (M2, the focal size of two m) right into a gas tube of 1.
BaGa2GeSe6 crystals are useful for nonlinear optical frequency conversion within their transparency vary. The wavelengths at which greatest conversion efficiencies is often received plus the tuning array for distinction-frequency era are observed.