Helping The others Realize The Advantages Of a-BBO Crystal
Helping The others Realize The Advantages Of a-BBO Crystal
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The calculation higher than assumes a uniform beam depth profile. It's essential to now look at hotspots within the beam or other non-uniform depth profiles and approximately estimate a greatest energy density.
Having said that, in lots of situations, the real difference in the elemental and next harmonic pulse velocities could cause just one pulse to appreciably lag the other.
Hi, thanks for making contact with Thorlabs. The wavelength ranges with the antireflective coatings on these β-BBO crystals align Using the respective wavelength bands that these crystals are optimized for. Requests for customizations is usually made by achieving out to us at [email protected]
A: A superior hurt threshold assures the crystal can handle extra energy without having degrading, leading to longer lifespan and consistent overall performance.
Other stage matching ailments are possible. Significant Sort-II phase matching takes advantage of an oe-o or eo-e for constructive and unfavorable uniaxial crystals. Non-crucial period matching employs crystal temperature to attain section matching rather than angular tuning.
Destructive uniaxial α-BBO crystal is a wonderful birefringent crystal, ideal for the manufacture of polarizer, polarization beam displacer, time delay compensator plate as well as other birefringent machine, specifically for UV and significant electrical power laser.
Though the above mentioned technique presents a great general guideline for LIDT values, be sure to contact Tech Assistance When your wavelength is different from the desired LIDT wavelength. If the ability density is less than the modified LIDT on the optic, then the optic really should operate on your application.
The angular written content of the focused beam may be visualized by tracing rays from your lens on the focal location. Each ray drawn in the lens to some tightly centered place (Figure 23) tends to make a distinct angle (ψ) Together with the Main ray, and also the variety of angles improves Using the NA. Since the choice of angles increases over and above the reference NA filter (or angular domain apodization filter width), the stage-matching in the rays outside of the filter width diminishes as a result lowering the SHG conversion efficiency of These rays.
When pulse lengths are among 1 ns and 1 µs, laser-induced harm can happen either as a result of absorption or perhaps a dielectric breakdown (for that reason, a person should Verify the two CW and pulsed LIDT). Absorption is both resulting from an intrinsic property from the optic more info or as a result of surface area irregularities; Consequently LIDT values are only valid for optics Conference or exceeding the surface area excellent specifications given by a producer.
The SHG gentle is polarized from the XZ aircraft and it is orthogonal to both the Eo as well as the k-vector. Instead of decompose the polarization of the SHG gentle into Ex and Ez elements, the electrical discipline is often called a rare wave (E'e). The refractive index for this extraordinary wave, n'e, improvements like a purpose of θ. n'e(θ) may be calculated utilizing the equation in Determine 13. The ellipse defining the amazing index of refraction as a operate of θ is a conic area of the index ellipsoid.
The two broad-bandwidth pulses and temporal stroll-off result in a reduction while in the conversion efficiency, along with worsen the optical quality of the next harmonic pulses. The right crystal thickness ought to be picked to attenuate the two results.
In the vast world of nonlinear optical crystals, BBO crystals stand out as pioneers, specifically in the realm of 266nm technology.
Their supremacy In this particular domain is not just by chance, but a result of their intrinsic and meticulously crafted Houses.
In frequency conversion, BBO crystals are utilized to change the shade of laser light-weight, enabling the manufacture of a wide array of colors that are not directly accessible from accessible laser sources. In electro-optic modulation, They're applied to manage the depth, phase, polarization, or path of a laser beam.