This article dives deep into the advantages and unique Attributes of BBO crystal and its paramount great importance in effective frequency doubling and harmonics generation at 266nm.
When selecting an SHG crystal, the heartbeat length from the laser source should be taken into consideration. A mismatch concerning the duration and crystal thickness will result in SHG pulses longer in time and narrower in spectral information than attainable beneath excellent disorders.
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Crystal life time will also be strongly dependent on the material excellent, While certain degradation phenomena look like intrinsic constraints of the material.
Next harmonic technology (SHG): We make use of SHG to evaluate our items�?nonlinear conversion efficiency and phase-matching angle for any offered input wavelength. We assurance that our things fulfil the requirements for SHG applications.
). This spatial concentrating constraint on the SHG method will usually result in the crystal size often currently being lower than the Rayleigh choice of the enter targeted pulse.
Figure eighteen: The standard and amazing refractive indices of β-BBO vary with frequency and wavelength because of a material residence referred to as dispersion. Dispersion exists in all media except vacuum.
Operation of nonlinear crystals at temperatures below space temperature (to attain section matching) is normally problematic, as it may bring on condensation of drinking water around the crystal surfaces In case the encompassing air is not really quite dry.
The lifespan of BBO crystals will vary enormously based on various elements. These involve how the crystals are utilized, how These are dealt with, along with the disorders by which They may be stored.
GWU-Lasertechnik offers all conventional nonlinear crystals like LBO, BBO and KTP using a broad range of specifications. Beside the well-set up components, BBO Crystal ground breaking crystals like CLBO or BiBO with remarkable Homes for e. g. deep-UV generation or substantial-electric power ultrashort pulse lasers are available. Irrespective of if particular person pieces for R & D functions are demanded or Price tag-successful numbers in modest, medium or big batches with in-time supply to the output line are essential: GWU’s devoted support really helps to discover the greatest core parts for the software.
When comparing an LIDT specified for your pulsed laser in your laser, it is essential to be aware of the next:
The situation of the inexperienced curve will depend on θ. In such cases, the angle θ has been tuned to provide a refractive index for 515 nm light-weight that matches the refractive index for 1030 nm gentle. This tuning angle is consequently optimized for Kind-I SHG section matching along with a fundamental-frequency input beam of 1030 nm.
The temporal stroll-off is often regarded critical in the event the temporal lag exceeds the length of the elemental pulse. Significant stroll-off may result in temporal lag that irreparably enhances the length on the output 2nd harmonic pulse.
Last but not least, the Minimize crystals are polished to a smooth finish. This sharpening method not merely enhances the aesthetic visual appeal on the crystals but will also increases their optical Homes by lowering surface area imperfections.
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