BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical supplies independently designed by Chinese experts. As a result of exceptional extensive efficiency along with the significant software worth in laser sector, they've captivated Significantly attention at your home and abroad.
two–10.eight-µm wavelength area. An additional vital limitation from the pump ability linked by using a thermal lensing influence in crystal was determined experimentally. A comparison was crafted from AgGaSe2 and ZnGeP2 crystals as supplies well suited for the successful technology of the 2nd harmonic of cw CO2 laser radiation.
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We create high-order harmonics from crystalline solids utilizing a tunable mid-IR OPA with 50 kHz repetition price. Employing nonlinear self-compression in YAG crystals, we make sub three-cycle pulses at three.8 μm wavelength for prime harmonic spectroscopy. Go through 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 6 nonlinear crystal is noted. The experimentally identified temperature-dependent period-matching problems for second-harmonic and sum-frequency technology 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 4 (RTA) optical parametric oscillators in addition to a CO2 more info rm CO _2 C O 2 laser and its harmonics within the 0.
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ZnGa2Se4, a nonlinear substance with extensive mid infrared transparency and good thermomechanical Houses
Laser-induced injury threshold on the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm from the nanosecond routine
The uniaxial nonlinear crystals BaGa2GeS6 and BaGa2GeSe6 are characterized in terms of thermal diffusivity and distinct warmth above a temperature number of -ninety to 250 °C for heat propagation together and perpendicular for the c -axis.
A thermo-optic dispersion formula for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e 6 nonlinear crystal is reported. The experimentally identified temperature-dependent phase-matching circumstances 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.
46 m duration loaded by CO2 at three atm gasoline pressure where by the laser pulse was broadened as a consequence of self-period modulation under filamentation. Then, the pump and sign pulses had been put together alongside one another. Time correlation of the pump and sign pulses was controlled by the pump pulse arm duration throughout the adjustment of mirror M3 posture.
Barium gallium germanium selenium (BaGa2GeSe6, BGGSe) crystal is usually a novel infrared nonlinear optical content with superb general performance, which was uncovered by Chinese experts. So far, there is not any report on massive measurement one crystal progress of the crystal in China. In this research, polycrystalline BGGSe was synthesized properly by using a self-created two-zone furnace with the quantity of four hundred g in one operate.
The nature of the instability and DFG energy minimize is not really apparent for us. One of The explanations might be associated with a nonlinear absorption and plasma development, respectively, that causes reflection/scattering/absorption of your longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse energy is presented in Fig.