HgGa2S4 Crystal Fundamentals Explained
HgGa2S4 Crystal Fundamentals Explained
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Optical parametric oscillator pumped at ~one µm with intracavity mid-IR variance-frequency technology in OPGaAs
It has extensive been predicted that the phase difference between the sign and idler subharmonic outputs of an optical parametric oscillator (OPO) undergoes a random wander process, just like the stage diffusion of a laser [1].
The initial-concepts density useful calculations are performed to check the geometries and electronic constructions of HgGa2X4 (X = S, Se, Te) semiconductors with defect chalcopyrite structures, and also the optical Homes of all crystals are investigated systematically. The outcomes suggest that these compounds have comparable band constructions as well as band gap decreases from S to Se to Te. For that linear optical properties, a few crystals display good gentle transmission during the IR and part visible areas, and in particular, HgGa2S4 and HgGa2Se4 crystals have reasonable birefringence.
Studies of practical pump laser systems well suited for ultrafast femtosecond OPOs according to CdSiP 2 are mentioned, along with the favorable linear and nonlinear optical Attributes, and also exceptional phase-matching properties of CdSiP two , are presented making use of The latest Sellmeier equations for the material. The explained experimental final results symbolize the best output pulse Electrical power and document ordinary electric power during the ultrafast picosecond and femtosecond time scales over the 6–7 μm spectral array to this point.
Self-referenced octave-large subharmonic GaP optical parametric oscillator centered at three μm and pumped by an Er-fiber laser
In this particular Introduction We'll give a brief overview on the important milestones in the development of stable-point out lasers, focus on the range of performance parameters feasible with these lasers, and mention key purposes.
The temperature dependence of refractive indices of optical materials is characterized During this operate by what we connect with their normalized thermo-optic coefficients. These are definitely determined experimentally by way of interferometric measurements of thermal growth and of variations in optical thickness at a number of laser wavelengths as functionality of temperature. A suitable vectorial formalism applied to these knowledge will allow predicting the thermal evolution of the refractive index all over the beneficial variety of transparency.
We existing a numerical analyze for the look of efficient MgO:PPLN primarily based pulsed nanosecond optical parametric oscillator (OPO), with input pump pulses of top-hat transverse intensity profile, and also a double-go pump cavity configuration. Especially, we look into the outcome of area condition over the conversion performance. We considered two varieties of area buildings: "ideal vertical-wall" and "wedge-shaped" domains and our numerical outcomes present that at increased pump pulse energies, the conversion effectiveness saturates, plus the saturated efficiency is almost unbiased in the domain shapes.
The specific warmth and thermal conductivity of HgGa2S4 are calculated. It's concluded that the mixed properties of HgGa2S4 crystals can provide for them a leading situation Among the many supplies Utilized in nonlinear-optical equipment for mid-IR-frequency conversion.
The technologies of increasing mercury thiogallate crystals (HgGa2S4) is improved and large-excellent bulk samples are created. The basic optical and thermal Qualities of these crystals are studied. The transmission spectra of mercury thiogallate are measured and its nonlinear traits such as the quadratic susceptibility, tuning curves, as well as the optical-harm resistance may also be established.
The defect chalcopyrite crystal HgGa2S4 has actually been employed in a 1064-nm pumped optical parametric oscillator to deliver Nonlinear crystals for optical parametric oscillators pumped by mild pulses of near IR lasers...
twelve μm and describe all frequency conversion schemes recognized thus far with them together with foreseeable future possible apps. Keywords and phrases: Ternary and quaternary semiconductors, defect chalcopyrites, solid options, nonlinear optical crystals, mid-infrared
Mid-IR 2nd-get NLO crystal is indispensable inside the frequency conversion applications within the mid-IR region. Compared with DUV and UV/Vis/close to-IR NLO crystals, sensible mid-IR NLO crystals are fairly rare, and a lot of of them remain with the stage of laboratory research. This chapter testimonials the recent progress within the mid-IR NLO crystals, which mostly consists of increasing the classical mid-IR NLO crystals into huge significant-high quality read more ones or into quasi-phase-matching constructions which might be appropriate for the laser devices by numerous development techniques and exploring new potential mid-IR NLO crystals by introducing new design and synthesis procedures.
Distinction frequency mixing of strongly targeted Gaussian beams in periodically poled LiNbO3 was investigated. The beams had been focused inside the crystal without damage. Mixing of cw and pulsed laser systems was used to reduce the thermal lensing effects inside of this crystal. A very low-electric power cw 1.064‐μm Nd:YAG laser beam was utilized as the pump, whereas the sign beam came from the picosecond optical .