Not known Facts About HgGa2S4 Crystal
Not known Facts About HgGa2S4 Crystal
Blog Article
Optical parametric oscillator pumped at ~1 µm with intracavity mid-IR variance-frequency generation in OPGaAs
It's got very long been predicted which the period difference between the signal and idler subharmonic outputs of an optical parametric oscillator (OPO) undergoes a random walk approach, much like the period diffusion of a laser [one].
The main-rules density functional calculations are executed to study the geometries and Digital buildings of HgGa2X4 (X = S, Se, Te) semiconductors with defect chalcopyrite structures, and the optical Homes of all crystals are investigated systematically. The outcome indicate that these compounds have identical band constructions plus the band gap decreases from S to Se to Te. To the linear optical Houses, three crystals demonstrate great mild transmission from the IR and element obvious areas, and especially, HgGa2S4 and HgGa2Se4 crystals possess reasonable birefringence.
The principle of chemical transportation reactions (volatilization of a material by way of a small-unstable chemical intermediate in a temperature T1 and again-reaction in the mixture at a temperature T2, using the temperature dependence with the chemical equilibrium involved) is usually a worthwhile Device for expanding single crystals of many components which can not be very easily attained from the soften.
We report new experimental benefits over the stage-matching Qualities of yellow coloration HgGa2S4 crystals for harmonic era of an Nd:YAG laser-pumped KTiOPO4 (KTP) optical parametric oscillator (OPO) and CO2 lasers in the 0.944-ten.5910 μm selection. Moreover, we current new Sellmeier equations that supply a superior replica of the present experimental final results and also the published info details for second-harmonic technology of CO2 laser radiation at 9.
We report the implementation of a KTP optical parametric oscillator pumped by a pulsed Ti:sapphire laser. Which includes signal and idler, it may be repeatedly tuned from one.261 by two.532 μm by various the pump wavelength. Two significant advancements were being obtained, such as the connection in the signal and idler tuning ranges and the large output pulse Vitality from the sign and idler tuning ... [Exhibit whole summary] ranges. The first improvement was accomplished by discovering two individual sets of stage-matching angles. The second advancement was realized by making use of five sets of resonator mirrors for oscillating possibly sign or idler.
Taxonomy, chemical bonding relations and nonlinear optical Homes of noncentrosymmetric sulfide crystals
We current a numerical examine for the design of effective MgO:PPLN dependent pulsed nanosecond optical parametric oscillator (OPO), with enter pump pulses of top-hat transverse intensity profile, and also a double-move pump cavity configuration. Especially, we look into the result of domain form within the conversion effectiveness. We considered two forms of area structures: "great vertical-wall" and "wedge-formed" domains and our numerical success demonstrate that at higher pump pulse energies, the conversion efficiency saturates, along with the saturated effectiveness is nearly impartial with the area shapes.
Better-order nonlinear processes in choice products may also be regarded in addition to a discussion on substance suitability for down-conversion of in close proximity to-IR lasers into the mid-IR to meet many software prerequisites is likewise presented.
Analysis of latest, promising broad-band-gap nonlinear crystals for your mid-IR is provided. We focused on ternary and quaternary chalcogenides and centered on their Actual physical and chemical Qualities, which Besides linear and nonlinear optical Houses, figure out the performance of crystal utilization in certain laser experiments. The correlation amongst the composition, structure and output parameters together with the developments in modifications of the main characteristics for instance band hole, nonlinear susceptibility, laser injury threshold, and so on, are shown.
The procedure is click here based on team velocity matching involving interacting waves Together with birefringent section matching. We are going to describe broadband SHG qualities in terms of beam propagation directions, spectral positions of resonance, productive nonlinearities, spatial wander-offs in between interacting beams, and spectral bandwidths. The results will exhibit the spectral bandwidths of the elemental wave authorized for broadband SHG to reach quite a few countless nm. The corresponding SH spectral vary spans from 1758.fifty eight to 4737.eighteen nm while in the non-oxide crystals viewed as With this analyze. These kinds of broadband SHG employing quick pulse trains can likely be placed on frequency up-conversion imaging within the mid-IR region, in details transmission, and in nonlinear optical signal processing.
Observe: Author names will likely be searched during the keywords and phrases discipline, also, but that will find papers where by the person is mentioned, in lieu of papers they authored.
Within this paper we theoretically investigate one of the most efficient pump temporal condition for pulsed Procedure of optical parametric oscillators (OPOs). The theoretical Investigation is made up of solving the exceptional Handle dilemma using the fee equation formalism. The OPO best buildup actions is derived for virtually any OPO configuration, and we demonstrate that the best pump pulse form is really a double rectangle. The very first rectangle is optimized with the buildup method, when the 2nd just one is optimized with the constant state, and the two count in different ways around the OPO mirror reflectivities along with the out there pump Power and utmost peak ability.
Diode-pumped optical parametric oscillation continues to be demonstrated for the first time to our expertise in one Nd:MgO:LiNbO3 nonlinear crystal. The crystal is pumped by a semiconductor diode laser array at 812 nm. The Nd³�?ions take up the 812-nm radiation to make 1084-nm laser oscillation.