With the appearance of latest nonlinear elements and one-frequency pump sources, there is renewed fascination in optical parametric oscillators (OPOs). One-mode diode-laser-pumped monolithic Nd:YAG nonplanar ring laser that may be the two amplified and frequency doubled is accustomed to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO.

We report over a femtosecond optical parametric oscillator (OPO) with the deep-infrared (deep-IR) based on the Kerr-lens-mode-locked Ti:sapphire laser as the pump supply. By deploying a novel cascaded intracavity arrangement, comprising a femtosecond OPO based on the nonlinear crystal, CdSiP 2 , synchronously pumped inside to a MgO:PPLN femtosecond OPO, We now have created broadly tunable radiation across 5958�?117 nm making use of quick static cavity hold off tuning, with a highest electrical power of 64 μW at 6791 nm, constrained through the absorption in mirror substrates together with polarization-dependent intracavity losses.

Besides the compactness and benign operating features, it was the large flexibility in style and design and output characteristics that led towards the achievements of stable-point out lasers over the past 40 years.

The superior conversion efficiency and wide selection of radiation wavelength tuning enables to hope that this material might compete with AgGaS2, AgGaSe2, ZnGeP2 and GaSe crystals Regardless of the substantial problems of massive measurement crystals development process.

OPO were improved by optimizing pump beam waistline and OPO cavity duration. The two air-spaced and sound etalons ended up analyzed to frequency

The calculated core level binding energies are as opposed with Those people of HgS, Fuel, AgGaS2 and SrGa2S4 compounds. The valence band spectrum proves to become independent within the technological situations of crystal growth. In distinction into the valence band spectrum, the distribution of electron states from the bandgap of HgGa2S4 crystals is located to be strongly dependent on the technological situations of crystal development as shown via the photoluminescence Assessment.

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A method is developed to unravel the technique of shortened equations describing parametric technology within a a single-frequency OPO cavity underneath nanosecond pulsed pumping. The frequency conversion coefficient for ZnGeP2, AgGaSe 2, and HgGa2S4 crystals plus the ideal reflection coefficient in the output mirror are approximated vs . the pump Strength density Wp at various values with the OPO nonstationarity .

Modeling and experimental research on period matching of second harmonic technology in different color Hg Ga two S four crystals are carried out. Using the recognized Sellmeier equations, the dispersion relation with weighting proportionally to small-wavelength boundary of your crystal transparency band is proposed.

Assessment of recent, promising large-band-hole nonlinear crystals with the mid-IR is provided. We focused on ternary and quaternary chalcogenides and centered on their own Actual physical and chemical Attributes, which Besides linear and nonlinear optical properties, determine the efficiency of crystal utilization in specific laser experiments. The correlation involving the composition, structure and output parameters along with the trends in variations of the principle features for example band gap, nonlinear susceptibility, laser problems threshold, etcetera, are demonstrated.

... The main details on the refractive index of orange HGS printed by Levine et al. [35] integrated only handful of wavelengths during the visible and close to-IR equally as an illustration in the feasibility of this crystal for birefringent phase-matching. The refractive indices with the orange phase ended up calculated and tabulated concerning 0.

The observed f -to- 2 f frequency beats, originating directly from the OPO, can be employed for self-referencing and section locking on the pump laser comb with no need for supercontinuum technology. With an average output electric power of �?thirty mW , this setup is likely to be effective for several different spectroscopic purposes in the mid-IR.

Mid-IR 2nd-get NLO crystal is indispensable from the frequency conversion programs from the mid-IR region. As opposed with DUV and UV/Vis/in close proximity to-IR NLO crystals, functional mid-IR NLO crystals are reasonably rare, here and lots of of these remain for the phase of laboratory exploration. This chapter testimonials the current development about the mid-IR NLO crystals, which predominantly incorporates growing the classical mid-IR NLO crystals into big large-top quality kinds or into quasi-period-matching constructions which can be suitable for the laser units by various growth approaches and Discovering new possible mid-IR NLO crystals by introducing new design and synthesis procedures.

Difference frequency mixing of strongly concentrated Gaussian beams in periodically poled LiNbO3 was investigated. The beams were concentrated In the crystal without the need of destruction. Mixing of cw and pulsed laser units was used to attenuate the thermal lensing outcomes within this crystal. A minimal-energy cw 1.064‐μm Nd:YAG laser beam was used given that the pump, Whilst the signal beam came from the picosecond optical .