.. [Exhibit entire abstract] parametric oscillator. The two independently concentrated beams had been built to overlap inside the crystal. The concentrating parameters of the two beams had been with regards to the identical. The concentrating operate created by Boyd and Kleinman for tightly focused beams was extended to periodically poled crystals to be able to fit the temperature-tuning curve. A 0.sixty six%/W efficiency was acquired for the primary difference frequency mixing method.
Results of thermal conductivity measurements are described for many of the more a short while ago designed nonlinear optical crystals. New or substantially revised values of thermal conductivity had been attained in 6 elements. Noteworthy thermal conductivities calculated were being Those people for AgGaS2 [0.014 W/(cm K) and 0.
Moreover the compactness and benign operating options, it was the large adaptability in design and style and output features that led into the achievement of reliable-state lasers over the past forty decades.
The large conversion efficiency and big selection of radiation wavelength tuning lets to be expecting that this content may perhaps compete with AgGaS2, AgGaSe2, ZnGeP2 and GaSe crystals in spite of the significant issues of big size crystals development process.
Moreover, the coherent beam mixture and divided pulse amplification approach to more Improve pulse Electrical power are summarized. At the conclusion of this critique, we current a detailed overview with the purposes of femtosecond pulses such as the era of supercontinuum and tunable femtosecond pulses, and a few sensible programs. Various perspectives and research directions of femtosecond pulses are tackled.
triggered oscillations in the idler wavelength of below 200MHz over 300s; the quick-time period balance was less than 3MHz
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We present a numerical study for the look of successful MgO:PPLN based mostly pulsed nanosecond optical parametric oscillator (OPO), with input pump pulses of prime-hat transverse depth profile, as well as a double-pass pump cavity configuration. In particular, we look into the influence of area form around the conversion performance. We viewed as two forms of domain buildings: "best vertical-wall" and "wedge-shaped" domains and our numerical success demonstrate that at greater pump pulse energies, the conversion efficiency saturates, and also the saturated performance is nearly unbiased on the area designs.
Better-order nonlinear procedures in substitute supplies may also be considered along with a discussion on substance suitability for down-conversion of around-IR lasers in the mid-IR to fulfill several application needs is also presented.
The technological innovation of developing mercury thiogallate crystals (HgGa2S4) is improved and high-high-quality bulk samples are generated. The fundamental optical and thermal properties of such crystals are analyzed. The transmission spectra of mercury thiogallate are measured and its nonlinear properties like the quadratic susceptibility, tuning curves, and also the optical-problems resistance may also be determined.
The electronic construction and chemical bonding in HgGa2S4 crystals grown by vapor transportation system are investigated with X-ray photoemission spectroscopy. The valence band of HgGa2S4 is uncovered to become formed by splitted S 3p and Hg 6s states at binding energies BE=3 7 eV along with the elements at BE=7 11 eV created via the hybridization of S 3s and Ga 4s states with a robust contribution from the Hg 5d states. At increased binding energies the emission traces connected with the Hg 4f, Ga 3p, S 2p, S 2s, Hg 4d, Ga LMM, Ga 3p and S LMM states are analyzed within the photoemission spectrum.
twelve μm and explain all frequency conversion strategies understood to this point with them and upcoming probable apps. Key phrases: Ternary and quaternary semiconductors, defect chalcopyrites, reliable methods, nonlinear optical crystals, mid-infrared
A pulsed TEA CO2 laser was utilised to analyze the influence of pump radiation parameters (method framework, wavelength, and pulse length), focusing problems, read more absorption coefficient, and temperature about the effectiveness of conversion into the next harmonic and on angular dependences of stage matching in ZnGeP2 crystals. Great agreement betweeen experimental and theoretical results is noticed. Browse extra
3% rms in excess of twelve h in excellent beam excellent. The close to-IR signal pulses from your OPO Have a very Gaussian pulse length of �?19 ps , calculated at 1284 nm. We now have investigated the temperature tuning properties of your OPO and in comparison the information Along with the theoretical calculations employing The latest Sellmeier equations and thermo-optic coefficients for that crystal. To the best of our know-how, This can be the initial picosecond OPO depending on CSP functioning at MHz repetition fees.