BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical components independently produced by Chinese scientists. Due to great comprehensive general performance as well as the critical application value in laser market, they've got captivated Considerably consideration in your house and abroad.
We derive explicit expressions while in the frame with the optical indicatrix for the 2nd-get helpful nonlinearity in biaxial crystals with point teams 2, m, and 1, governing the conversion performance in 3-wave nonlinear optical interactions. The tabulated expressions with the monoclinic symmetry courses two and m are valid for all probable orientations on the optical indicatrix relative towards the crystallographic body and for propagation together an arbitrary route outside the principal planes. They are often utilized for direct estimation of the helpful nonlinearity in a similar frame wherever the stage-matching loci are calculated.
We current new experimental results for your period-matching Homes from the recently found BaGa2GeSe6
New Center infrared nonlinear optical crystals of BaGa2GeX6(X=S, Se) are synthesized. The buildings of each BaGa2GeS6 and BaGa2GeSe6 have been identified to get isomorphous exhibiting a three-dimensional framework made by the parallel alignment of Ga or Ge tetrahedron groups together the c-aix. The ultraviolet transmittance spectrum indicates the small-wavelength absorption edges of BaGa2GeS6 and BaGa2GeSe6 are 380 nm and 440 nm, respectively.
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The dislocations are traced via the repetition of etching from epitaxial layer into the interface. The outcome exhibit that dislocations in the substrates are anticipated to bend along the route normal for the epitaxial advancement path with the interface.
A thermo-optic dispersion system for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e six nonlinear crystal is documented. The experimentally identified temperature-dependent stage-matching disorders 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 in the 0.
Because of the great complete performance and also the critical software value in laser marketplace, they've captivated A lot focus at your house and abroad. The progress of crystal growth and laser output of BGSe and BGGSe are summarized, and the long run enhancement is prospected.
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24% that's similar with one particular obtained with significant repetition level very low-energy laser programs like in [9]. Taking into consideration a possibility to enhance pump pulse energy of our setup around ~10 mJ, the DFG pulse Electrical power is often improved up to ~24 μJ at the same performance, nonetheless, it necessary a large-aperture, ~fifteen mm in diameter BGGSe sample. Normal DFG pulse Electrical power in AGS wasn't confidently calculated with Ophir-3A electricity meter due to its low signal.
A thermo-optic dispersion method for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e 6 nonlinear crystal is documented. The experimentally identified temperature-dependent section-matching problems website for 2nd-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 in addition to a CO2 rm CO _2 C O two laser and its harmonics from the 0.
The very best frequency conversion effectiveness of 10⁻⁴ was obtained for a comparatively new PbIn6Te10 crystal, which can be an get of magnitude increased than past results.
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The character of this instability and DFG Power minimize just isn't very clear for us. Considered one of The explanations can be associated using a nonlinear absorption and plasma formation, respectively, that triggers reflection/scattering/absorption of your longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse energy is introduced in Fig.