AgGaS2 Crystal - An Overview

AgGaS2(AGS) crystal is among the simplest nonlinear laser crystals Utilized in the infrared Performing band At this time. As a result of its significant nonlinear coefficient, high infrared transmittance, reduced optical absorption and scattering, and minimal wavefront distortion effectiveness, its software in the infrared field continues to be popularized A lot more.

To explore the structural, vibrational, and thermodynamic properties from the chalcopyrite-type compound AgGaS2 under pressure, we utilized hydrostatic strain for the calm compound dependant on the first principles calculation and quasi-harmonic approximation. The structural parameters, which include lattice constants and bond lengths reduce monotonically with the rising tension. The phonon dispersion curves below various pressures expose the structural stage transition of chalcopyrite-kind compound AgGaS2 at about 4 GPa. The intrinsic mechanism of thermal conductivity with the chalcopyrite-sort compound AgGaS2 has been shown with phonon anharmonicity. The frequencies of your optical phonons at the center issue Γ of the primary Brillouin zone ended up calculated with the longitudinal optical–transverse optical (LO–TO) splitting method.

Silver Thiogallate (AgGaS2, AGS) continues to be shown being an successful crystal for nonlinear parametric interactions from the infrared spectral selection. Its transparency region ranges from 0,fifty three to twelve µm. AGS based mostly optical parametric oscillators function continuously tunable radiation more than a variety of wavelengths inside the infrared spectral array. Significant transparency while in the quick wavelength assortment beginning at 550 nm is Utilized in OPOs pumped by Nd:YAG laser.

Slender AgGaS2(AGS) crystal plates are well-liked at ultrashort pulse technology in mid IR array by difference frequency era using NIR wavelength pulses.

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LiInS2 is pyroelectric as well, its electro-optical parameters are The bottom for working with it as an effective electro-optical material. 3‐frequency collinear period matching is possible in LiInS2, LiInS2 has large birefringence and reduced absorption during the THz frequency region is judged being a possibly far more useful optical nonlinear substance compared to the analogous compound LiGaO2.

What is the efficiency selection of up-conversion of CO2 laser radiation image into around-IR or noticeable region utilizing AgGaS2 crystal? Up-conversion of CO2 laser radiation image into in the vicinity of-IR or seen region applying AgGaS2 crystal has an efficiency up to thirty%.

Theoretical research of mechanical, thermal and optical Qualities of the newly predicted tetragonal NaGaS2

The effects of external pressures, around 7 GPa, about the linear and next-get nonlinear optical Houses of AgGaS2 are explored systematically. Our get the job done reveals which the resistance to laser-induced injury, the transparency range, as well as phase matchability might be enhanced from the strain-induced deformation of AgGaS2 crystal. In addition, the function of the powerful SHG response of AgGaS2 crystal continues to be preserved in The full IR area even under pressure around seven GPa.

6 μm utilizing plasma oscillations principle of solids. The calculated values are compared Together with the experimental values and the values documented by distinctive workers. Reasonably excellent arrangement has actually been observed between them.

The structural, Digital and optical Houses of two chalcopyrite crystals, AgGaS2AgGaS2 and AgGaSe2AgGaSe2, are analyzed using more info the entire potential linearized augmented aircraft waves process inside the area density approximation. Geometrical optimization of the device mobile (equilibrium quantity, c/ac/a ratio, interior parameter u, and bulk modulus) is in fantastic arrangement with experimental details. The energy hole is discovered being immediate for the two products and the nature in the gap crucially will depend on the manner during which the Ga 3d, and Ag 4d electrons are dealt with as Main or valence states.

CuInS2, and principle in the wedge technique with the measurement of nonlinear coefficients,�?IEEE J. Quantum

A specialized genetic algorithm technique together with initial-rules calculations is utilized to forecast the steady structures of AgGaS2 crystal at diverse pressures. The effects show that the chalcopyrite structure initial transforms for the monoclinic Cc stage, then into a centrosymmetric construction that the 2nd-harmonic technology (SHG) reaction of AgGaS2 is disappeared.

On this paper, dependant on the density functional idea (DFT) and utilizing the entire-opportunity linearized augmented plane wave, the electronic and optical Homes of your NaGaS2 happen to be calculated. The Digital Homes exhibit the electron cloud density round the Ga–S bond is bigger than the Na–S bond. The leading states within the valence band and conduction band are connected with the S-p and Ga-s and Ga-p orbitals. The NaGaS2 is a semiconductor with a direct band gap of 4.

其非线性光学特性、宽带宽工作和热稳定性使其适用于红外激光器的变频过程。