New Step by Step Map For HgGa2S4 Crystal
New Step by Step Map For HgGa2S4 Crystal
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053 μm. The absorption spectrum of ammonia was introduced to demonstrate the feasibility from the made optical parametric oscillator procedure for spectroscopic measurements and gasoline detection.
The importance of the attained final results lies in The point that to obtain the exact conversion in SHG or DFM, just one now necessitates elementary input radiation with A lot decreased depth.
This method makes it possible for the operation of widely tunable optical parametric oscillators2 (OPO) and subsequent variation frequency generators3 manufacturing tunable pulses of high peak ability. The higher Electrical power on the pump pulse trains has selected Rewards with the Procedure of a synchronously pumped OPO, e.g., peaceful security prerequisites, plus the possible to work with huge cavity losses (e.g. metal mirrors) making it possible for big tuning ranges with a single set of mirrors and large output-coupling components for pulse shortening.
Reports of feasible pump laser technologies suitable for ultrafast femtosecond OPOs dependant on CdSiP 2 are discussed, as well as favorable linear and nonlinear optical Qualities, as well as exclusive period-matching attributes of CdSiP 2 , are presented working with The latest Sellmeier equations for the material. The described experimental benefits stand for the best output pulse Power and record typical electric power within the ultrafast picosecond and femtosecond time scales through the six–seven μm spectral variety to this point.
OPO have been improved by optimizing pump beam midsection and OPO cavity length. Both air-spaced and solid etalons had been examined to frequency
The superior conversion performance and big selection of radiation wavelength tuning lets to be expecting that this substance may well compete with AgGaS2, AgGaSe2, ZnGeP2 and GaSe crystals Regardless of the significant issues of huge dimension crystals growth process.
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We current a numerical examine for the look of efficient MgO:PPLN based mostly pulsed nanosecond optical parametric oscillator (OPO), with input pump pulses of major-hat transverse intensity profile, along with a double-pass pump cavity configuration. Particularly, we examine the result of area form within the conversion efficiency. We viewed as two different types of domain constructions: "perfect vertical-wall" and "wedge-shaped" domains and our numerical results demonstrate that at larger pump pulse energies, the conversion effectiveness saturates, as well as the saturated effectiveness is almost impartial with the area shapes.
Larger-order nonlinear procedures in option supplies may also be regarded as in addition to a dialogue on materials suitability for down-conversion of close to-IR lasers in to the mid-IR more info to satisfy a variety of software requirements is usually presented.
stabilize and tune the OPO, from which the strong etalon gave a much better general performance. Temperature oscillations inside the PPLN crystal
... The initial facts on the refractive index of orange HGS revealed by Levine et al. [35] included only several wavelengths within the seen and in close proximity to-IR equally as an indication with the feasibility of this crystal for birefringent phase-matching. The refractive indices to the orange section have been measured and tabulated involving 0.
with the detection of molecular trace gasses. The oscillation threshold, output electric power and steadiness of The one resonant
During this paper we theoretically examine one of the most effective pump temporal condition for pulsed operation of optical parametric oscillators (OPOs). The theoretical analysis contains solving the exceptional Management issue utilizing the charge equation formalism. The OPO exceptional buildup conduct is derived for any OPO configuration, and we demonstrate that the ideal pump pulse condition is often a double rectangle. The main rectangle is optimized for that buildup approach, whilst the second one particular is optimized for that continuous state, and both equally depend otherwise around the OPO mirror reflectivities together with the obtainable pump Electrical power and highest peak ability.
Tunable mid-IR radiation is attained in the course of 2nd harmonic technology of tunable CO2-laser radiation employing a CdGeAs2 crystal. Its angular tuning properties for the CO2- laser wavelength, angular acceptance angle and spectral acceptance are calculated.