Getting My a-BBO Crystal To Work

Standard cleaning and good storage can help increase the lifespan of BBO crystals. It’s also important to stay clear of exposing the crystals to ailments outside their specified running range, as this can cause lasting hurt.

The group velocities of the elemental and 2nd harmonic pulses will also be different, even when phase-matched, plus the magnitude of your team velocity mismatch depends upon the crystal properties as well as the optical frequencies from the pulses.

Hi there, thanks for making contact with Thorlabs. The wavelength ranges on the antireflective coatings on these β-BBO crystals align With all the respective wavelength bands that these crystals are optimized for. Requests for customizations can be made by reaching out to us at [email protected]

The stage matching angle can be altered by rotating the crystal throughout the y axis. An adjustment that is often in a few levels can either optimize the functionality on the crystal inside the set up or match A further elementary frequency within the crystal's working array.

We use Numerical Aperture (NA) to describe the extent of the angular content. Ideally, the fundamental laser gentle can be collimated through the entire crystal, since collimated light-weight resembles a group of rays aligned to the identical route by having an NA of zero.

In the situation of Sort-I stage matching and β-BBO crystals, the elemental mild propagates as a unprecedented wave from the crystal, while the second harmonic light propagates as a standard wave.

Delving deeper in to the prowess of BBO crystals, it’s evident they characterize the forefront of contemporary photonics. Their broad transparency check here variety not only bestows them with versatility but will also makes certain that they are appropriate with numerous mild sources.

This kind of functionality is invaluable in situations where by a certain light frequency is needed, even so the resource doesn’t In a natural way provide it. By using BBO’s Houses, scientists and engineers can properly “tune�?their light-weight sources to preferred frequencies.

Now Look at the maximum Strength density to that which is specified as being the LIDT for the optic. In case the optic was tested in a wavelength other than your working wavelength, the harm threshold need to be scaled properly [3].

The temporal stroll-off in the slower pulse with respect towards the more rapidly is often a substantial portion of the pulse period. This can be illustrated in Figure 22.

As will likely be reviewed down below, There exists a concentrating numerical aperture (NA) limitation for the SHG period-matching system exactly analogous for the spectral phase matching limitation mentioned inside the preceding portion (

When picking an SHG crystal, the pulse duration from the laser source should be taken into account. A mismatch in between the duration and crystal thickness will bring about SHG pulses more time in time and narrower in spectral information than probable beneath perfect circumstances.

Several diverse stage-matching techniques can be employed to equalize the refractive indices of the elemental and 2nd harmonic mild. One method, which employs linearly polarized gentle as well as the distinction between the standard and incredible refractive indices, is Type-I crucial phase matching. This is the common strategy for adverse uniaxial crystals by which no > ne.

The spectrally narrowed SHG pulse spectrum is said to become apodized, because an effect of the fundamental pulse exceeding the utmost enter bandwidth limit would be the removal of the highest and cheapest frequencies with the SHG pulse spectrum.

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