BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical products independently created by Chinese scientists. As a result of outstanding thorough general performance as well as significant software price in laser marketplace, they have attracted much awareness at home and overseas.
We derive express expressions in the body on the optical indicatrix for the second-get productive nonlinearity in biaxial crystals with stage teams two, m, and one, governing the conversion performance in three-wave nonlinear optical interactions. The tabulated expressions for that monoclinic symmetry courses 2 and m are legitimate for all doable orientations of your optical indicatrix relative into the crystallographic body and for propagation together an arbitrary direction outside the principal planes. They may be useful for immediate estimation on the productive nonlinearity in the exact same body exactly where the stage-matching loci are calculated.
spectral array. Moreover, we current new Sellmeier equations that supply a great reproduction of the
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We create higher-get harmonics from crystalline solids employing a tunable mid-IR OPA with fifty kHz repetition level. Working with nonlinear self-compression in YAG crystals, we deliver sub a few-cycle pulses at 3.eight μm wavelength for high harmonic spectroscopy. Study much more
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A thermo-optic dispersion formula for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e six nonlinear crystal is claimed. The experimentally established temperature-dependent phase-matching conditions for next-harmonic and sum-frequency era of Nd:YAG laser-pumped KTiOPO4 rm KTiOPO _4 K T i O P O four (KTP) and RbTiOAsO4 rm RbTiOAsO _4 R b T i O A s O four (RTA) optical parametric oscillators in addition to a CO2 rm CO _2 C O 2 laser and its harmonics from the 0.
Due to superb extensive functionality along with the critical application price in laser business, they have got attracted A lot notice at your house and abroad. The development of crystal development and laser output of BGSe and BGGSe are summarized, and the future enhancement is prospected.
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Unique emphasis are going to be specified to The existing specialized restrictions and availability of pump laser properties and nonlinear crystal Attributes. Study extra
The relevant Attributes and conventions useful for the newly rising acentric monoclinic crystals belonging towards the borate family are summarized and tabulated. The derivations are expected to assist build adherence to uniform nomenclature and conventions for these novel inorganic more info nonlinear crystals, and to remove ambiguity and growing confusion from the literature and in the economic requirements. The overall expressions for that effective nonlinearity are lowered for triclinic crystals of position team one to simplified sorts in the principal planes.
$ rm BaGa _2 rm GeSe _6$ (BGGSe) is often a recently designed nonlinear material that is definitely appealing for ultrabroad frequency mixing and ultrashort pulse technology because of its comparably lower dispersion and superior damage threshold. A numerical research displays the material’s ability for octave-spanning mid-infrared pulse era as many as 18 µm. In a primary experiment, we display that a lengthy crystal duration of two.
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The character of this instability and DFG Vitality decrease is not really clear for us. Amongst The explanations is often relevant that has a nonlinear absorption and plasma development, respectively, that causes reflection/scattering/absorption of the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Strength is introduced in Fig.