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two–10.8-µm wavelength region. A further vital limitation from the pump electrical power linked which has a thermal lensing impact in crystal was resolute experimentally. A comparison was product of AgGaSe2 and ZnGeP2 crystals as supplies appropriate for the economical technology of the second harmonic of cw CO2 laser radiation.
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A further software of the setup is seeding higher-tension CO2-laser amplifier [17]. It ought to be famous that introduced set up on the mid-IR laser procedure is relatively uncomplicated and has a fantastic opportunity for Strength scalability. Strength of the front-end Ti:sapphire laser could be increased around hundreds of Joules [12], having said that that pump laser will require a large-aperture BGGSe crystal sample. Also, the DFG pulse Vitality could be enhanced by an improvement of signal pulse�?uniform spectrum shape and greater energy.
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A thermo-optic dispersion method for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a two G e S e six nonlinear crystal is documented. The experimentally established temperature-dependent stage-matching conditions for next-harmonic and sum-frequency technology 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 2 laser and its harmonics within the 0.
Intraband magnetotransmission and magnetophotoconductivity were being measured approximately eighteen T using CO2 laser lines. The cyclotron resonance and merged resonance harmonics are used to find out the exchange interaction within an HgMnTe crystal. The experiment also evidences the freezing of electrons in the donor state. Read a lot more
ZnGa2Se4, a nonlinear substance with extensive mid infrared transparency and very good thermomechanical Attributes
Laser-induced destruction threshold of your nonlinear crystals BaGa4Se7 and BaGa2GeSe6 at 2091 nm during the nanosecond routine
24% which is comparable with one particular received with superior repetition rate reduced-Vitality laser devices like in [nine]. Taking into account a chance to improve pump pulse Vitality of our setup approximately ~10 mJ, the DFG pulse Strength might be greater as many as ~24 μJ at a similar performance, having said that, it required a broad-aperture, ~fifteen mm in diameter BGGSe sample. Normal DFG pulse Electricity in AGS wasn't confidently measured with Ophir-3A ability meter due to its minimal signal.
A thermo-optic dispersion method for BaGa2GeSe6 rm BaGa _2 rm GeSe _6 B a G a 2 G e S e six nonlinear crystal is documented. The experimentally established temperature-dependent phase-matching disorders 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 4 (RTA) optical parametric oscillators in addition to a CO2 rm CO _2 C O 2 laser and its harmonics within the 0.
$ rm BaGa _2 rm GeSe _6$ (BGGSe) is actually a newly created nonlinear materials that's desirable for ultrabroad frequency mixing and ultrashort pulse generation because check here of its comparably reduced dispersion and high damage threshold. A numerical analyze demonstrates the fabric’s capability for octave-spanning mid-infrared pulse generation up to eighteen µm. In a first experiment, we display that a long crystal duration of 2.
The pump pulse Power was managed by a variable diffraction attenuator. Its polarization was tuned by 90° that has a fifty percent-wave plate mainly because it needed to be common wave in the BGGSe (when AGS crystal was applied, the signal beam polarization was tuned). The signal beam was concentrated by spherical mirror (M2, the focal length of two m) right into a gas tube of one.
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