BaGa2GeSe6 Crystal - An Overview
BaGa2GeSe6 Crystal - An Overview
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BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical products independently developed by Chinese scientists. Due to fantastic comprehensive overall performance and the important application worth in laser business, they've got attracted Substantially notice at home and overseas.
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We existing new experimental effects for your phase-matching properties of the a short while ago identified BaGa2GeSe6
Yet another software of this set up is seeding substantial-strain CO2-laser amplifier [17]. It ought to be famous that presented setup with the mid-IR laser method is pretty uncomplicated and has an awesome prospective for energy scalability. Electricity in the entrance-stop Ti:sapphire laser can be greater around many Joules [twelve], even so that pump laser would require a large-aperture BGGSe crystal sample. Also, the DFG pulse Electrical power might be greater by an advancement of signal pulse�?uniform spectrum form and amplified Power.
We crank out superior-order harmonics from crystalline solids utilizing a tunable mid-IR OPA with fifty kHz repetition level. Utilizing nonlinear self-compression in YAG crystals, we create sub 3-cycle pulses at three.eight μm wavelength for prime harmonic spectroscopy. Study far more
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A thermo-optic dispersion formula for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e six nonlinear crystal is claimed. The experimentally identified temperature-dependent period-matching ailments for next-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 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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77Growth of The brand new substantial-functionality NLO crystal BaGa2GeSe6 through the controlled vapor pressure process
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A high quality BGGSe solitary crystal with size of thirty mm×90 mm was grown by Bridgman-stockbarger process, which can be the main in China. The effective fabrication of BGGSe crystal products was also accomplished right after orienting, chopping, and polishing procedures, which laid a solid foundation with the more software study with the crystal.
The conduct of dislocations during the interfacial area concerning the epitaxial layer grown within the liquid phase along with the substrate of GaAs is investigated. Observations of dislocations lying along the 〈one hundred ten�?directions were carried out working with an optical microscope following shallow etching by using a new chemical etchant.
46 m size read more crammed by CO2 at three atm fuel tension exactly where the laser pulse was broadened on account of self-period modulation underneath filamentation. Then, the pump and sign pulses were being combined with each other. Time correlation in the pump and signal pulses was controlled through the pump pulse arm size throughout the adjustment of mirror M3 situation.
The pump pulse Electricity was controlled by a variable diffraction attenuator. Its polarization was tuned by ninety° using a half-wave plate since it needed to be regular wave in the BGGSe (when AGS crystal was applied, the sign beam polarization was tuned). The signal beam was concentrated by spherical mirror (M2, the focal length of two m) right into a gasoline tube of one.
The nature of this instability and DFG Power reduce just isn't very clear for us. One among the reasons could be relevant by using a nonlinear absorption and plasma formation, respectively, that causes reflection/scattering/absorption of the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Electricity is introduced in Fig.