These crystals are one of a kind on account of their capacity to alter the frequency of light passing by them, a property that is extremely sought after in several fields for example laser technological innovation and quantum physics. The flexibility of BBO crystals tends to make them a crucial component in lots of Highly developed optical programs.
In addition to their use in laser frequency conversion, BBO crystals have found programs in electro-optic modulation and quantum optics experiments.
Any scratches can degrade the optical efficiency on the crystal and probably trigger harm under high laser electrical power. For stubborn stains, an answer of moderate detergent or isopropyl Alcoholic beverages may be gently applied to the crystal surface area and afterwards rinsed off with distilled h2o.
This effectiveness is vital, specially when one particular considers the generation of the 266nm wavelength, in which even small inefficiencies may lead to major energy losses.
We use Numerical Aperture (NA) to describe the extent of the angular content. Preferably, the elemental laser mild might be collimated throughout the crystal, considering that collimated light-weight resembles a gaggle of rays aligned to the exact same route having an NA of zero.
Now Assess the maximum ability density to that which can be specified as being the LIDT for that optic. If the optic was examined in a wavelength in addition to your operating wavelength, the destruction threshold should be scaled properly.
Determine 18: The everyday and remarkable refractive indices of β-BBO change with frequency and wavelength due to a fabric residence called check here dispersion. Dispersion exists in all media apart from vacuum.
Rather then decompose the SHG polarization into factors Ex and Ez, The sunshine is usually described as an extraordinary wave (E'e) using a refractive index, n'e. Within the diagram on the best, n'e, which is determined by θ, is indicated by the intersection of your conic section illustrated by the red ellipse Along with the XZ airplane.
But BBO crystals stand resilient, ensuring that methods proceed to function devoid of hiccups, reducing downtimes and making sure Price tag-success in the long run.
Fluorescence excitation is yet another realm wherever the 266nm era showcases its significance. Fluorescence requires the absorption of sunshine by a cloth and the next emission of sunshine at a special wavelength. The 266nm light is highly helpful in exciting particular fluorescent products, earning them glow brightly and making it possible for for his or her detection and analyze.
Thorlabs offers a good selection of optics optimized for use with femtosecond and picosecond laser pulses. Make sure you see below for more information.
This characteristic interprets to minimized have to have for considerable thermal administration systems, once again accentuating Charge financial savings and system simplicity.
When an enter pulse's spectral vary is equal to or narrower as opposed to reference pulse, the produced next harmonic pulse contains a duration that may be shorter by an element of 1/√2 and a spectral width that is certainly broader by a factor of √two.
On top of that, the structural and compositional characteristics of BBO supply it with exceptional thermal stability and resistance against environmental challenges.