The Definitive Guide to a-BBO Crystal
The Definitive Guide to a-BBO Crystal
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These crystals are special thanks to their power to change the frequency of light passing through them, a assets that is very popular in various fields for example laser technology and quantum physics. The flexibility of BBO crystals helps make them an important component in lots of Superior optical programs.
The 266nm wavelength presents precise interactions that other wavelengths can’t, rendering it indispensable for detecting and finding out particular compounds.
Hello there, thanks for contacting Thorlabs. The wavelength ranges with the antireflective coatings on these β-BBO crystals align Together with the respective wavelength bands that these crystals are optimized for. Requests for customizations could be produced by achieving out to us at [email protected]
In conclusion, BBO crystals are an interesting and flexible material which has drastically Sophisticated the sphere of optics and photonics. By being familiar with their Qualities and the way to handle them, we are able to continue to harness their opportunity and travel further more enhancements in optical technology.
The Strength density of the beam should be calculated in terms of J/cm2. The graph to the ideal demonstrates why expressing the LIDT as an Power density presents the very best metric for short pulse sources. On this routine, the LIDT specified as an Electrical power density can be applied to any beam diameter; one particular doesn't ought to compute an modified LIDT to adjust for improvements in spot measurement.
Now Review the most ability density to that which happens to be specified as the LIDT for the optic. In case the optic was examined in a wavelength besides your working wavelength, the problems threshold should be scaled correctly.
The realm of material processing has Similarly benefited from your precision of 266nm technology. State-of-the-art microfabrication techniques, which include intricate detailing on elements at a microscopic stage, need an exact light-weight supply. The sharpness linked to the 266nm wavelength makes sure that lasers may make exact cuts, etches, and modifications.
When an optic is ruined by a ongoing wave (CW) laser, it is generally due to melting of your surface area due to absorbing the laser's Electricity or harm to the optical coating (antireflection) [one]. Pulsed lasers with pulse lengths longer than 1 µs could be dealt with as CW lasers for LIDT conversations.
Pumped by the click here fourth harmonic of a Nd:YAG laser (at 266nm), a tunable OPO with signal wavelength array involving 422nm and 477nm continues to be noticed by angle-tuning a sort I BBO crystal. Pumped by a 1mJ, 80fs Dye laser at 615nm, the OPA with two BBO crystals yields over fiftyµJ (optimum one hundred thirtyµJ),
Having said that, there is absolutely no second buy nonlinear effect in alpha-BBO crystal due to centrosymmetry in its crystal structure and therefore it's got no use for second buy nonlinear optical processes. Alternatively, alpha-BBO is extensively used for fabrication of polarizers, polarizing beam displacers, period retarders, birefringent plates, and time hold off compensators Specifically Those people for UV and large ability lasers.
The team velocity as well as the period velocity aren't equivalent, which means the sine wave of your copyright plus the envelope of the pulse transfer by optical media at different speeds.
When comparing an LIDT specified for the pulsed laser to the laser, it is vital to be aware of the subsequent:
When an enter pulse's spectral selection is equivalent to or narrower in comparison to the reference pulse, the produced 2nd harmonic pulse incorporates a length which is shorter by a factor of one/√2 plus a spectral width which is broader by a factor of √two.
In frequency conversion, BBO crystals are used to alter the coloration of laser mild, enabling the creation of a wide range of colours that aren't instantly available from offered laser resources. In electro-optic modulation, They may be utilised to regulate the intensity, phase, polarization, or course of the laser beam.