BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical materials independently formulated by Chinese scientists. Due to the exceptional thorough efficiency along with the essential application benefit in laser field, they've attracted Significantly attention at home and overseas.
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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 described. The experimentally established temperature-dependent stage-matching circumstances for second-harmonic and sum-frequency generation 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 two laser and its harmonics during the 0.
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The uniaxial nonlinear crystals BaGa2GeS6 and BaGa2GeSe6 are characterised when it comes to thermal diffusivity and unique heat over a temperature number of -90 to 250 °C for warmth propagation together and perpendicular on the c -axis.
The related Qualities get more info and conventions utilized for the recently emerging acentric monoclinic crystals belonging for the borate household are summarized and tabulated. The derivations are expected to assist establish adherence to uniform nomenclature and conventions for these novel inorganic nonlinear crystals, also to reduce ambiguity and growing confusion during the literature and in the industrial requirements. The general expressions for the powerful nonlinearity are lessened for triclinic crystals of position team 1 to simplified varieties during the principal planes.
forty six m size stuffed by CO2 at 3 atm fuel tension exactly where the laser pulse was broadened due to self-phase modulation beneath filamentation. Then, the pump and signal pulses have been mixed with each other. Enough time correlation in the pump and signal pulses was managed by the pump pulse arm duration from the adjustment of mirror M3 situation.
It can be revealed that there are wavelength combinations at which the powerful nonlinearity coefficient varies only somewhat in a wide frequency band.
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