Optical parametric oscillator pumped at ~one µm with intracavity mid-IR distinction-frequency technology in OPGaAs

Output idler energies to the microjoule amount are obtained with utmost conversion efficiency of eleven% for the amplifier phase, which can be more than two instances better than the outcome received with the analogous sample of the commonly spread substance AgGaS two .

Aside from the compactness and benign running features, it absolutely was the big versatility in layout and output characteristics that led for the good results of reliable-condition lasers over the past forty years.

.. [Exhibit complete abstract] third-harmonic era and parametric amplification with small-frequency pumping in periodically poled active nonlinear crystals are also investigated. The Investigation is performed for the situation of a periodically poled Nd:Mg:LiNbO3 crystal. Perspectives of working with periodically poled Energetic nonlinear crystals in laser gadgets with self-frequency conversion are reviewed.

OPO were being enhanced by optimizing pump beam waistline and OPO cavity duration. Each air-spaced and sound etalons have been examined to frequency

This double rectangle is quantitatively described and it is per preceding success documented within the literature. Also, numerical simulations are utilized to validate our analytical model on a doubly resonant OPO and clearly show consistent effects. The numerical simulations also display that an best top-hat temporal profile could deliver performances quite close to those reached With all the exceptional double rectangle.

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Vibrational spectra of Li-containing nonlinear crystals as well as their application in THz radiation technology are reviewed. Making use of an illustration of LiGaS2, the defect impact on spectroscopic attributes is demonstrated. High-temperature annealing in a proper ambiance permits one to get rid of extended and position defects also to Enhance the transparency. Energy construction and parameters of most important place defects for example anion vacancy (File-Middle) and cation antisite defect GaLi calculated from the 1st principles agree well with the experimental results.

The 3rd harmonic of CO2-laser radiation has actually been received by passing the laser beam as a result of two CdGeAs2 crystals in tandem, with the first crystal oriented for next-harmonic technology and the 2nd for sum mixing. Working with this technique, We now have reached a median external conversion efficiency of one.

The electronic construction and chemical bonding in HgGa2S4 crystals grown by vapor transport approach are investigated with X-ray photoemission spectroscopy. The valence band of HgGa2S4 is discovered to be formed by splitted S 3p and Hg 6s states at binding energies BE=3 7 eV and also the elements at BE=7 11 eV produced because of the hybridization of S 3s and Ga 4s states with a powerful contribution through the Hg 5d states. At better binding energies the emission traces connected to the Hg 4f, Ga 3p, S 2p, S 2s, Hg 4d, Ga LMM, Ga 3p and S LMM states are analyzed during the photoemission spectrum.

We report a broadband optical parametric oscillator (OPO) pumped by a Yb-doped fiber laser program. By utilizing a 300 μm extensive magnesium-doped periodically poled website LiNbO 3 crystal given that the parametric acquire medium and configuring the OPO like a chirped-pulse oscillator, we acquired mid-infrared emission possessing an instantaneous bandwidth masking 3084�?466 nm. This end result signifies, to the ideal of our expertise, the widest instantaneous bandwidth acquired from the Yb-fiber-laser-pumped singly resonant OPO, demonstrating the immense possible of chirped-pulse oscillation in scaling the instantaneous bandwidth of extremely-fast OPOs.

Within this paper we theoretically look into quite possibly the most successful pump temporal shape for pulsed Procedure of optical parametric oscillators (OPOs). The theoretical Evaluation contains fixing the optimum Regulate difficulty using the level equation formalism. The OPO best buildup conduct is derived for virtually any OPO configuration, and we exhibit that the exceptional pump pulse form is a double rectangle. The 1st rectangle is optimized for your buildup process, even though the second one particular is optimized for the continual state, and equally depend otherwise within the OPO mirror reflectivities plus the out there pump Vitality and utmost peak energy.

Big difference frequency mixing of strongly targeted Gaussian beams in periodically poled LiNbO3 was investigated. The beams have been targeted Within the crystal with out damage. Mixing of cw and pulsed laser units was employed to minimize the thermal lensing consequences inside of this crystal. A small-power cw one.064‐μm Nd:YAG laser beam was made use of given that the pump, Whilst the sign beam came from a picosecond optical .