单�?双�?全�?恢�?缩略图 幻灯片 视�?标�?�?批�?
The pc that you are utilizing is not registered by an institution with a membership to this post. You should choose one of the choices down below.
spectral array. Furthermore, we existing new Sellmeier equations that supply a good replica with the
New Center infrared nonlinear optical crystals of BaGa2GeX6(X=S, Se) happen to be synthesized. The structures of the two BaGa2GeS6 and BaGa2GeSe6 had been found to get isomorphous exhibiting a three-dimensional framework produced from the parallel alignment of Ga or Ge tetrahedron teams along the c-aix. The ultraviolet transmittance spectrum suggests the short-wavelength absorption edges of BaGa2GeS6 and BaGa2GeSe6 are 380 nm and 440 nm, respectively.
We crank out superior-buy harmonics from crystalline solids utilizing a tunable mid-IR OPA with 50 kHz repetition fee. Employing nonlinear self-compression in YAG crystals, we produce sub three-cycle pulses at 3.eight μm wavelength for prime harmonic spectroscopy. Study far more
To get usage of this material, please entire the Recommendation Type and We're going to comply with up along with your librarian or Establishment with your behalf.
Notice: Creator names will likely be searched inside the key terms area, also, but which could obtain papers where the person is pointed out, in lieu of papers they authored.
Whilst working with an institutional account for this Site we don’t monitor any personal, general performance, useful or 1st or 3rd bash relevant details.
In the last decades, mid-infrared (3–twelve μm) laser resources applying crystals with nonlinear optical Qualities have captivated a particular interest due to their likely purposes in various fields such as optical counter-measures and remote chemical sensing. As transparency of typical oxide crystals is limited to about 4 μm, several researches have already been focused on chalcopyrite compounds on account of their huge transparency during the mid-IR vary as well as their potent nonlinear optical coefficients. There is a need of such crystals able to transform effectively the around infrared wavelengths from commercially offered lasers into wavelengths larger than five μm by way of Optical Parametric Oscillators (OPO) programs.
Join ResearchGate to find out and not sleep-to-day with the newest investigation from major specialists in CO2 Laser and many other scientific subject areas.
24% which can be similar with a single attained with significant repetition amount lower-Electricity laser units like in [nine]. Considering a probability to extend pump pulse Power of our set up as many as ~ten mJ, the DFG pulse Electricity is often enhanced around ~24 μJ at the exact same effectiveness, nonetheless, it necessary a large-aperture, ~fifteen mm in diameter BGGSe sample. Common DFG pulse Electrical power in AGS was not confidently calculated with Ophir-3A electric power meter as a consequence of its low sign.
The appropriate Homes and conventions utilized for the recently rising acentric monoclinic crystals belonging on the borate family members are summarized and tabulated. The derivations are envisioned to help you establish adherence to uniform nomenclature and conventions for these novel inorganic nonlinear crystals, and to eliminate ambiguity and growing confusion while in the literature As well as in the economic requirements. The final expressions to the productive nonlinearity are lowered for triclinic crystals of place team 1 to simplified forms within the principal planes.
$ rm BaGa _2 rm GeSe _6$ BaGa2GeSe6 Crystal (BGGSe) is a freshly produced nonlinear product that's interesting for ultrabroad frequency mixing and ultrashort pulse technology because of its comparably very low dispersion and superior injury threshold. A numerical analyze displays the material’s potential for octave-spanning mid-infrared pulse generation as many as 18 µm. In a first experiment, we exhibit that a long crystal size of two.
The pump pulse Electrical power was controlled by a variable diffraction attenuator. Its polarization was tuned by ninety° by using a half-wave plate as it had to be standard wave within the BGGSe (when AGS crystal was made use of, the signal beam polarization was tuned). The sign beam was focused by spherical mirror (M2, the focal size of two m) into a gasoline tube of 1.
The nature of this instability and DFG Power reduce isn't distinct for us. Certainly one of the reasons can be related with a nonlinear absorption and plasma development, respectively, that triggers reflection/scattering/absorption on the longwave mid-IR pulse. The dependence of BGGSe transmittance on pump pulse Strength is offered in Fig.