Little Known Facts About HgGa2S4 Crystal.
Little Known Facts About HgGa2S4 Crystal.
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Optical parametric oscillator pumped at ~1 µm with intracavity mid-IR difference-frequency technology in OPGaAs
We report on a femtosecond optical parametric oscillator (OPO) for your deep-infrared (deep-IR) depending on the Kerr-lens-mode-locked Ti:sapphire laser as the pump resource. By deploying a novel cascaded intracavity arrangement, comprising a femtosecond OPO according to the nonlinear crystal, CdSiP 2 , synchronously pumped inside to some MgO:PPLN femtosecond OPO, We have now generated broadly tunable radiation throughout 5958�?117 nm employing rapid static cavity delay tuning, which has a maximum power of sixty four μW at 6791 nm, minimal with the absorption in mirror substrates along with polarization-dependent intracavity losses.
A list of ~450 noncentrosymmetric sulfides continues to be noticed in reference to nonlinear optical Qualities. It's been found that around the plane on the oxide bond lengths the noncentrosymmetric sulfide crystals are dominantly positioned right into a rosette of two intersected ellipses of «acentricity».
By employing intracavity dispersion Handle, near-transform-confined sign pulses of �?100 fs period with clean single-peak spectrum are reached at 1264 nm, equivalent to an idler wavelength at 6440 nm. To the most beneficial of our know-how, That is The very first time this sort of useful idler powers while in the deep-IR are actually generated from the dispersion-compensated CSP femtosecond OPO at sub-100 MHz repetition charge.
Self-referenced octave-large subharmonic Hole optical parametric oscillator centered at 3 μm and pumped by an Er-fiber laser
We report the implementation of a KTP optical parametric oscillator pumped by a pulsed Ti:sapphire laser. Which includes sign and idler, it could be continuously tuned from one.261 by 2.532 μm by different the pump wavelength. Two important advancements have been realized, including the relationship from the signal and idler tuning ranges and also the substantial output pulse energy from the sign and idler tuning ... [Clearly show whole summary] ranges. The 1st enhancement was obtained by identifying two individual sets of phase-matching angles. The next enhancement was realized through the use of 5 sets of resonator mirrors for oscillating either signal or idler.
The temperature dependence of refractive indices of optical materials is characterized With this function by what we phone their normalized thermo-optic coefficients. These are established experimentally by means of interferometric measurements of thermal expansion and of adjustments in optical thickness at a handful of laser wavelengths as perform of temperature. An acceptable vectorial formalism applied to these details permits predicting the thermal evolution of the refractive index all around the useful range of transparency.
We existing a numerical examine for the look of successful MgO:PPLN based pulsed nanosecond optical parametric oscillator (OPO), with input pump pulses of best-hat transverse intensity profile, plus a double-go pump cavity configuration. In particular, we investigate the influence of area condition on the conversion efficiency. We thought of two different types of area constructions: "ideal vertical-wall" and "wedge-shaped" domains and our numerical success demonstrate that at greater pump pulse energies, the conversion efficiency saturates, as well as the saturated effectiveness is nearly impartial with the domain styles.
Vibrational spectra of Li-made up of nonlinear crystals as well as their application in THz radiation technology are talked about. Utilizing an example of LiGaS2, the defect impact on spectroscopic characteristics is revealed. Significant-temperature annealing in a proper atmosphere allows a single to get rid of extended and level defects and to improve the transparency. Energy framework and parameters of major position defects for instance anion vacancy (File-Centre) and cation antisite defect GaLi calculated from the 1st rules agree well Using the experimental outcomes.
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Easy strategy for lessening the depolarization decline ensuing from thermally induced birefringence in stable-condition lasers
Quantum mechanical primarily based very first basic principle calculations are already used to get the unit mobile lattice parameters of mercury thiogallate (HgGa2S4) in defect stannite structure for the first time. For this, we taken care of HgGa2S4 in two different types of web-site symmetries in precisely the same space group.
Mid-IR second-purchase NLO crystal is indispensable in the frequency conversion applications from the mid-IR region. In comparison with DUV and UV/Vis/around-IR NLO crystals, practical mid-IR NLO crystals are relatively scarce, and lots of of them are still on the phase of laboratory investigate. This chapter reviews the modern progress on the mid-IR NLO crystals, which largely consists of increasing the classical mid-IR NLO crystals into significant higher-top quality types or into quasi-phase-matching constructions which can be well suited for the laser units by numerous expansion solutions and Checking out new possible mid-IR NLO crystals by introducing new layout and synthesis check here tactics.
Distinction frequency mixing of strongly centered Gaussian beams in periodically poled LiNbO3 was investigated. The beams had been concentrated inside the crystal without having harm. Mixing of cw and pulsed laser devices was used to attenuate the thermal lensing consequences inside this crystal. A minimal-ability cw 1.064‐μm Nd:YAG laser beam was employed because the pump, While the sign beam arrived from a picosecond optical .