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Another software of this setup is seeding superior-pressure CO2-laser amplifier [seventeen]. It should be mentioned that offered setup of your mid-IR laser method is comparatively basic and it has a terrific opportunity for energy scalability. Vitality of the front-conclude Ti:sapphire laser is usually greater nearly countless Joules [twelve], however that pump laser will require a broad-aperture BGGSe crystal sample. Also, the DFG pulse Vitality may be elevated by an improvement of sign pulse�?uniform spectrum shape and greater energy.
We create significant-order harmonics from crystalline solids employing a tunable mid-IR OPA with 50 kHz repetition rate. Applying nonlinear self-compression in YAG crystals, we produce sub a few-cycle pulses at 3.8 μm wavelength for high harmonic spectroscopy. Read extra
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0 Abstract Summary: BaGa4Se7 (BGSe) and BaGa2GeSe6 (BGGSe) crystals are novel infrared nonlinear optical components independently made by Chinese scientists. As a result of great in depth efficiency and the critical software benefit in laser marketplace, they've attracted A great deal attention at your house and abroad.
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Laser-induced harm threshold in the nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm while in the nanosecond regime
A high quality BGGSe one crystal with size of 30 mm×90 mm was grown by Bridgman-stockbarger system, that is the first in China. The prosperous fabrication of BGGSe crystal devices was also reached following orienting, reducing, and sharpening procedures, which laid a reliable foundation for the more software research from the crystal.
A thermo-optic dispersion formulation for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e 6 nonlinear crystal is documented. The experimentally determined temperature-dependent period-matching ailments for 2nd-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 as well as a CO2 rm CO _2 C O 2 laser and its harmonics from the 0.
$ more info rm BaGa _2 rm GeSe _6$ (BGGSe) is actually a recently developed nonlinear content that is certainly appealing for ultrabroad frequency mixing and ultrashort pulse era because of its comparably very low dispersion and large destruction threshold. A numerical research demonstrates the material’s capability for octave-spanning mid-infrared pulse era as many as eighteen µm. In a first experiment, we show that a lengthy crystal size of two.
The pump pulse Electricity was managed by a variable diffraction attenuator. Its polarization was tuned by ninety° having a fifty percent-wave plate since it had to be common wave from the BGGSe (when AGS crystal was made use of, the signal beam polarization was tuned). The signal beam was focused by spherical mirror (M2, the focal length of 2 m) right into a fuel tube of one.
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