HgGa2S4 Crystal No Further a Mystery
HgGa2S4 Crystal No Further a Mystery
Blog Article
With the appearance of latest nonlinear supplies and solitary-frequency pump resources, There is certainly renewed fascination in optical parametric oscillators (OPOs). A single-method diode-laser-pumped monolithic Nd:YAG nonplanar ring laser that's equally amplified and frequency doubled is used to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO.
Effects of thermal conductivity measurements are noted for several of the more just lately created nonlinear optical crystals. New or significantly revised values of thermal conductivity were received in 6 components. Notable thermal conductivities measured were being those for AgGaS2 [0.014 W/(cm K) and 0.
The very first-concepts density practical calculations are done to check the geometries and electronic structures of HgGa2X4 (X = S, Se, Te) semiconductors with defect chalcopyrite structures, and the optical properties of all crystals are investigated systematically. The effects suggest that these compounds have comparable band constructions plus the band gap decreases from S to Se to Te. For that linear optical Qualities, 3 crystals show superior light transmission during the IR and component seen regions, and specifically, HgGa2S4 and HgGa2Se4 crystals possess reasonable birefringence.
The higher conversion effectiveness and wide range of radiation wavelength tuning enables to assume this material could contend with AgGaS2, AgGaSe2, ZnGeP2 and GaSe crystals in spite of the substantial problems of big dimensions crystals advancement process.
Within this perform, we existing exactly what is, to our understanding, the very first measurements with the quantum stage diffusion sound of the cw OPO. Browse much more
The measured core stage binding energies are as opposed with those of HgS, GaS, AgGaS2 and SrGa2S4 compounds. The valence band spectrum proves to get impartial on the technological situations of crystal advancement. In distinction to the valence band spectrum, the distribution of electron states from the bandgap of HgGa2S4 crystals is observed to become strongly dependent upon the technological disorders of crystal development as shown from the photoluminescence Evaluation.
The technology of tunable pico- and femtosecond mild pulses with parametric frequency conversion procedures has captivated elevated consideration recently1. New crystal supplies, as BBO, LBO, and KTP, with excellent nonlinearity and substantial destruction threshold are now accessible, and pump lasers of enhanced balance allow the reputable Procedure of optical parametric oscillators. Parametric units pumped ... [Exhibit entire summary] possibly by cw modelocked lasers or by single extreme ultrashort pulses have been made. During this contribution parametric units are talked over that happen to be pumped by intensive pulse trains of some microseconds length and repetition prices up to 50Hz.
We existing a numerical research for the design of successful MgO:PPLN primarily based pulsed nanosecond optical parametric oscillator (OPO), with enter pump pulses of top-hat transverse depth profile, plus a double-pass pump cavity configuration. Specifically, we investigate the impact of domain shape around the conversion efficiency. We deemed two forms of area constructions: "great vertical-wall" and "wedge-shaped" domains and our numerical outcomes clearly show that at increased pump pulse energies, the conversion effectiveness saturates, and also the saturated efficiency is almost independent on the domain shapes.
Furthermore, we carried out a numerical simulation of chirped-pulse OPOs (CPOPOs) and exposed that the spectral profile from the output from a CPOPO was relevant to each the parametric gain profile of the nonlinear crystal and also the intra-cavity high-purchase dispersion.
Examination of new, promising extensive-band-gap nonlinear crystals for that mid-IR is presented. We focused on ternary and quaternary chalcogenides and dependent on their own Bodily and chemical Houses, which Together with linear and nonlinear optical Qualities, determine the performance of crystal usage in specified laser experiments. The correlation involving the composition, structure and output parameters plus the tendencies in changes of the principle properties like band gap, nonlinear susceptibility, laser injury threshold, and so forth, are demonstrated.
The defect chalcopyrite crystal HgGa2S4 is utilized inside a 1064-nm pumped optical parametric oscillator to deliver Nonlinear crystals for optical parametric oscillators pumped by mild pulses of in the vicinity of IR lasers...
We report a broadband optical check here parametric oscillator (OPO) pumped by a Yb-doped fiber laser procedure. By employing a three hundred μm extended magnesium-doped periodically poled LiNbO 3 crystal since the parametric attain medium and configuring the OPO to be a chirped-pulse oscillator, we acquired mid-infrared emission getting an instantaneous bandwidth masking 3084�?466 nm. This outcome signifies, to the very best of our understanding, the widest instantaneous bandwidth acquired from the Yb-fiber-laser-pumped singly resonant OPO, demonstrating the immense opportunity of chirped-pulse oscillation in scaling the instantaneous bandwidth of extremely-rapidly OPOs.
A straightforward quantum product agrees perfectly With all the experimental final results and causes it to be possible to interpret the impact with regards to
three% rms more than twelve h in excellent beam excellent. The around-IR sign pulses in the OPO Have a very Gaussian pulse duration of �?19 ps , calculated at 1284 nm. Now we have investigated the temperature tuning characteristics with the OPO and in contrast the data with the theoretical calculations using The latest Sellmeier equations and thermo-optic coefficients to the crystal. To the most effective of our expertise, Here is the to start with picosecond OPO based on CSP working at MHz repetition charges.