BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical supplies independently produced by Chinese experts. Because of the outstanding in depth functionality as well as vital application benefit in laser market, they have got attracted A great deal interest in the home and overseas.
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spectral vary. Furthermore, we current new Sellmeier equations that provide a very good copy from the
A different application of the setup is seeding significant-stress CO2-laser amplifier [17]. It ought to be pointed out that offered set up of your mid-IR laser program is fairly basic and it has an incredible probable for Vitality scalability. Energy of your entrance-conclude Ti:sapphire laser is often improved nearly hundreds of Joules [twelve], having said that that pump laser would require a large-aperture BGGSe crystal sample. Also, the DFG pulse Power might be elevated by an advancement of sign pulse�?uniform spectrum condition and improved Vitality.
We generate large-purchase harmonics from crystalline solids using a tunable mid-IR OPA with 50 kHz repetition fee. Working with nonlinear self-compression in YAG crystals, we deliver sub three-cycle pulses at 3.8 μm wavelength for top harmonic spectroscopy. Browse extra
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Which crystal kind of ZrO//2 is cryStallized from Zr(OH)//4 depended on the h2o vapor pressures within the crystallization stage. The contents of monoclinic crystals increased with the h2o vapor pressures. Browse a lot more
The development of crystal progress and laser output of BGSe and BGGSe are summarized, and the longer term advancement is prospected.
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Laser-induced problems threshold with the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm from the nanosecond routine
A high quality BGGSe solitary crystal with sizing of 30 mm×ninety mm was developed by Bridgman-stockbarger approach, which happens to be the initial in China. The thriving fabrication of BGGSe crystal gadgets was also realized soon after orienting, chopping, and polishing processes, which laid a stable foundation for your even further software study on the crystal.
A thermo-optic dispersion system for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e six nonlinear crystal is described. The experimentally decided temperature-dependent period-matching problems for 2nd-harmonic and sum-frequency technology of Nd:YAG read more 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 as well as a CO2 rm CO _2 C O 2 laser and its harmonics during the 0.
$ rm BaGa _2 rm GeSe _6$ (BGGSe) is usually a recently created nonlinear materials that is definitely desirable for ultrabroad frequency mixing and ultrashort pulse era because of its comparably small dispersion and substantial damage threshold. A numerical examine reveals the material’s ability for octave-spanning mid-infrared pulse technology around 18 µm. In a primary experiment, we show that an extended crystal length of 2.
It really is proven there are wavelength combos at which the efficient nonlinearity coefficient varies only somewhat in a broad frequency band.
The nature of this instability and DFG Vitality lower is just not clear for us. Certainly one of the reasons could be relevant by using a nonlinear absorption and plasma formation, respectively, that causes reflection/scattering/absorption with the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Electricity is offered in Fig.