Optical parametric oscillator pumped at ~1 µm with intracavity mid-IR distinction-frequency generation in OPGaAs
A mode-locked tunable dye laser continues to be designed that is synchronously pumped at substantial repetition charges from the doubled output of the mode-locked Nd:YAG laser. The dye laser offers intense pulses of 35 psec duration that happen to be widely tunable, of around-completely transform-confined bandwidth, As well as in time coincidence Along with the pumping pulses.
Aside from the compactness and benign operating capabilities, it absolutely was the large overall flexibility in structure and output traits that led towards the accomplishment of strong-point out lasers over the last forty years.
.. [Display entire abstract] third-harmonic era and parametric amplification with reduced-frequency pumping in periodically poled Energetic nonlinear crystals may also be investigated. The Investigation is carried out for the situation of a periodically poled Nd:Mg:LiNbO3 crystal. Views of making use of periodically poled Energetic nonlinear crystals in laser units with self-frequency conversion are talked about.
Self-referenced octave-extensive subharmonic Hole optical parametric oscillator centered at three μm and pumped by an Er-fiber laser
prompted oscillations within the idler wavelength of below 200MHz above 300s; the shorter-expression balance was under 3MHz
The temperature dependence of refractive indices of optical components is characterised Within this work by what we connect with their normalized thermo-optic coefficients. These are established experimentally as a result of interferometric measurements of thermal growth and of changes in optical thickness at some laser wavelengths as operate of temperature. An appropriate vectorial formalism placed on these information will allow predicting the thermal evolution of the refractive index all around the beneficial choice of transparency.
We present a numerical review for the design of successful MgO:PPLN based pulsed nanosecond optical parametric oscillator (OPO), with enter pump pulses of leading-hat transverse depth profile, and also a double-pass pump cavity configuration. Especially, we examine the effect of area form within the conversion efficiency. We thought of two forms of domain buildings: "great vertical-wall" and "wedge-formed" domains and our numerical outcomes present that at bigger pump pulse energies, the conversion effectiveness saturates, plus the saturated performance is almost unbiased on the domain designs.
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Assessment of recent, promising broad-band-gap nonlinear crystals for your mid-IR is offered. We focused on ternary and quaternary chalcogenides and dependent on their Bodily and chemical Homes, which Besides linear and nonlinear optical properties, determine the performance of crystal use in specified laser experiments. The correlation in between the composition, composition and output parameters along with the developments in adjustments of the key features such as band gap, nonlinear susceptibility, laser hurt threshold, etc, are shown.
... The 1st data within the refractive index of orange HGS posted by Levine et al. [35] integrated only number of wavelengths during the visible and around-IR just as an indication of your feasibility of this crystal for birefringent phase-matching. The refractive indices to the orange period were being calculated and tabulated in between 0.
The observed file -to- two f frequency beats, more info originating straight from the OPO, can be utilized for self-referencing and phase locking with the pump laser comb with no need for supercontinuum generation. With a median output electrical power of �?thirty mW , this set up may very well be valuable for many different spectroscopic programs while in the mid-IR.
The chosen nonlinear crystals exhibit bigger nonlinear conversion performance when compared with AgGaS 2 , with BaGa two GeS 6 Furthermore supplying a narrower angular spectrum of spontaneous parametric down conversion, beneficial in interferometric schemes. Our results create a pathway for integrating Highly developed crystal systems into mid-infrared metrology and imaging techniques, environment the stage for long run developments in nonlinear interferometry and spectroscopy.
Variation frequency mixing of strongly centered Gaussian beams in periodically poled LiNbO3 was investigated. The beams have been centered inside the crystal with no destruction. Mixing of cw and pulsed laser units was used to attenuate the thermal lensing consequences inside of this crystal. A very low-electric power cw 1.064‐μm Nd:YAG laser beam was used as the pump, Whilst the sign beam arrived from a picosecond optical .