Everything about BBO Crystal
Everything about BBO Crystal
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A2: Indeed, prolonged exposure to humidity can degrade the optical overall performance of BBO crystals. Humidity may lead to water absorption to the crystal surface, which often can affect its optical Qualities.
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The Z-axis is parallel towards the optical axis of the crystal and also is Moreover called the terrific axis. The X- and Y-axes are parallel into the optical axis and therefore are called common axes.
Next harmonic era (SHG): We utilize SHG to measure our merchandise�?nonlinear conversion performance and section-matching angle to get a supplied input wavelength. We warranty that our merchandise fulfil the requirements for SHG applications.
In the situation of Kind-I section matching and β-BBO crystals, the elemental light-weight propagates as an extraordinary wave while in the crystal, when the 2nd harmonic light-weight propagates as a normal wave.
A suggested guideline for focusing femtosecond laser pulses into a nonlinear crystal is to keep up a Rayleigh variety that is definitely at the least a number of times more time compared to the duration in the SHG crystal. This minimizes the chance of damaging the crystal, and minimizes the damaging effects of spatial stage mismatch and spatial (Poynting vector) wander-off.
the chemical sturdiness; e.g., some crystal components are hygroscopic, Other individuals bear chemical changes when heated in the vacuum chamber for software of the dielectric coating
We also layer our items with anti-reflection levels to minimize representation losses at the crystal surfaces.
While this guideline supplies a common development, It's not a quantitative Assessment of LIDT vs wavelength. In CW applications, for instance, harm scales a lot more strongly with absorption from the coating and substrate, which isn't going to essentially scale perfectly with wavelength.
No matter if it’s in the development of extra productive lasers, the exploration of quantum phenomena, or maybe the creation of latest optical equipment, BBO crystals will certainly proceed to Perform a pivotal check here job.
What are BBO Crystals? BBO crystals certainly are a kind of nonlinear optical crystal known for their wide transparency range, substantial problems threshold, and great thermal and chemical steadiness.
The temporal walk-off is commonly viewed as critical if the temporal lag exceeds the duration of the elemental pulse. Extreme wander-off can lead to temporal lag that irreparably raises the period from the output 2nd harmonic pulse.
The size of your SHG crystal substantially has an effect on the spectral width of the reference pulse, or alternatively the bandwidth on the SHG filter.