BaGa2GeSe6 Crystal No Further a Mystery
BaGa2GeSe6 Crystal No Further a Mystery
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BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical supplies independently formulated by Chinese scientists. Due to fantastic detailed general performance plus the vital software benefit in laser marketplace, they've captivated Substantially consideration in your own home and overseas.
We derive specific expressions in the frame with the optical indicatrix for the next-purchase productive nonlinearity in biaxial crystals with point teams 2, m, and one, governing the conversion efficiency in a few-wave nonlinear optical interactions. The tabulated expressions to the monoclinic symmetry courses 2 and m are legitimate for all possible orientations with the optical indicatrix relative into the crystallographic frame and for propagation together an arbitrary course outside the principal planes. They are often useful for direct estimation of your efficient nonlinearity in the exact same frame wherever the stage-matching loci are calculated.
spectral array. Also, we current new Sellmeier equations that give a fantastic reproduction of the
Yet another application of this setup is seeding substantial-pressure CO2-laser amplifier [17]. It should be pointed out that introduced set up from the mid-IR laser program is comparatively uncomplicated and has a fantastic prospective for Electrical power scalability. Power in the front-conclude Ti:sapphire laser is often amplified up to countless Joules [12], having said that that pump laser would require a wide-aperture BGGSe crystal sample. Also, the DFG pulse energy might be increased by an advancement of signal pulse�?uniform spectrum shape and enhanced Vitality.
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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 6 nonlinear crystal is described. The experimentally identified temperature-dependent period-matching conditions for next-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 in addition to a CO2 rm CO _2 C O two laser and its harmonics within the 0.
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77Growth of The brand new high-efficiency NLO crystal BaGa2GeSe6 through the controlled vapor stress technique
Laser-induced harm threshold of your nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm in the nanosecond regime
24% which is equivalent with a person acquired with substantial repetition price low-Electrical power laser units like in [9]. Taking into account a chance to enhance pump pulse Strength of our setup as many as ~10 mJ, the DFG pulse energy might be increased around ~24 μJ at exactly the same efficiency, having said that, it expected a broad-aperture, ~fifteen mm in diameter BGGSe sample. Normal DFG pulse Electrical power in AGS wasn't confidently measured with Ophir-3A electricity meter resulting from its very low sign.
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 noted. The experimentally decided temperature-dependent stage-matching conditions BaGa2GeSe6 Crystal for 2nd-harmonic and sum-frequency technology 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 two laser and its harmonics during the 0.
46 m size crammed by CO2 at 3 atm fuel force where by the laser pulse was broadened resulting from self-stage modulation beneath filamentation. Then, the pump and signal pulses were blended collectively. Enough time correlation in the pump and signal pulses was controlled because of the pump pulse arm size from the adjustment of mirror M3 place.
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The nature of this instability and DFG Strength minimize just isn't obvious for us. One among The explanations can be connected by using a nonlinear absorption and plasma development, respectively, that triggers reflection/scattering/absorption on the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Strength is offered in Fig.