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2–ten.8-µm wavelength location. A further critical limitation of your pump ability connected using a thermal lensing result in crystal was firm experimentally. A comparison was made from AgGaSe2 and ZnGeP2 crystals as elements ideal for the productive technology of the second harmonic of cw CO2 laser radiation.
spectral range. On top of that, we existing new Sellmeier equations that provide a excellent reproduction from the
Numerous courses of IR NLO elements with excellent General efficiency are actually uncovered, for instance BaGa4Se7 and BaGa2GeSe6. Moreover, the investigation on these resources has absent beyond crystal framework and preliminary characterization. Terrific efforts have already been performed in the bulk crystal progress, during the extensive measurement in their Bodily properties employing bulk crystals, from the evaluation in their IR laser output functionality, and sooner or later inside the fabrication of laser product. Within the frequency down-conversion OPOs pumped by the traditional 1 µm laser, BaGa4Se7 has understood the stable output of mid-considerably IR laser output with the highest ability and widest wavelength assortment to date. During this evaluation, rather than covering all compounds with IR NLO Houses, our discussion will only give attention to All those displaying very good overall IR NLO performance and application prospect, especially on those of which significant sizing one crystals are actually now received. This overview then concludes with an outlook on what attempts may very well be designed Down the road.
We crank out higher-purchase harmonics from crystalline solids employing a tunable mid-IR OPA with fifty kHz repetition rate. Utilizing nonlinear self-compression in YAG crystals, we crank out sub a few-cycle pulses at three.eight μm wavelength for top harmonic spectroscopy. Read much more
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77Growth of the new higher-functionality NLO crystal BaGa2GeSe6 by means of the controlled vapor tension technique
Laser-induced damage threshold on the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm from the nanosecond routine
Particular emphasis will likely be provided to the current technological limits and availability of pump laser properties and nonlinear crystal Houses. Read extra
It has been uncovered that the optical nonlinear coefficients d31 and d22 in LiNbO3 are of reverse sign, in disagreement with the previously report by Other individuals. This is a vital thing to consider for optimizing nonlinear optical interactions in LiNbO3.
forty six m size filled by CO2 at three atm gas tension where by the laser pulse was broadened as a consequence of self-period modulation below filamentation. Then, the pump and signal pulses had been BaGa2GeSe6 Crystal put together jointly. Time correlation from the pump and signal pulses was managed through the pump pulse arm duration through the adjustment of mirror M3 situation.
The pump pulse energy was controlled by a variable diffraction attenuator. Its polarization was tuned by 90° having a half-wave plate mainly because it needed to be regular wave within the BGGSe (when AGS crystal was applied, the sign beam polarization was tuned). The signal beam was concentrated by spherical mirror (M2, the focal duration of two m) right into a gasoline tube of 1.
The character of the instability and DFG energy lower is just not crystal clear for us. Certainly one of the reasons might be related with a nonlinear absorption and plasma development, respectively, that triggers reflection/scattering/absorption in the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Power is presented in Fig.