The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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Past work showed that the twin-crystal configuration can be used to compensate for the thermal lensing result[
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We made use of a transmission grating (TG) to be a dispersive part in our stretcher and compressor. A compact configuration was adopted, where by the stretcher and the compressor shared a person grating just like that in Ref.
At the same time, a shorter laser wavelength can be received; it is possible to work by using a quantum defect properly beneath one%. To be a consequence, the heat technology can be so modest this partly compensates the lower thermal conductivity.
-switched manner. The bandwidth in the orthogonal orientation was Obviously A lot broader. The calculated Fourier remodel confined pulse duration was as small as sub-160 fs. Underneath the configuration where The 2 crystals were being put in exactly the same orientation, While using the seed enter, the amplified pulse bandwidth was only three nm with 180 μJ Electricity when it broke the dichroic mirrors.
Amplified pulses having an Power over 2.5 mJ is usually anticipated by applying a better pump energy on the regenerative amplifier and which makes it operate in the saturation amount. The laser fluence of ~1 J/cm2 within the dichroic mirrors is believed to be below the harm threshold of large-high-quality dielectric-coated mirrors.
The opposite was placed with its Np -axis parallel While using the s-polarized path. A comparison was designed among a configuration With all the crystals put in the identical orientation (
KGW (potassium gadolinium tungstate) is really a here crystal that is often utilized like a Raman crystal in Raman spectroscopy. This is a colorless, transparent crystal that features a substantial Raman scattering effectiveness and a strong Raman spectrum, which makes it well suited for An array of Raman applications.
Check with RP Photonics for just about any advice about tungstate lasers, which include femtosecond lasers and higher-electricity lasers.
Firstly, Because the filament-induced luminescence originates from simultaneous absorption of many photons, whose total Vitality exceeds the bandgap energy of fabric, it offers easy separation of excitation and emission wavelengths and gives extremely strong signal despite remaining emitted in excess of the whole good angle. The place on the filament track In the crystal might be effortlessly altered in a very preferred way by different the pump pulse Vitality, whereas the depth clamping in a light-weight filament significantly lessens the risk of optical destruction. These features might be practical for obtaining more information about crystal homogeneity and reveal the presence and distribution of different dopants during the sample.
These products may be used for frequency conversion in lasers for extending of tuning vary. SRS in crystals is appropriate with latest all-good-point out technological know-how and provides a very simple, compact means of frequency conversion.
KGW has a solid Raman spectrum that extends within the ultraviolet towards the close to infrared, which makes it valuable for A selection of apps. The crystal may be used for a reference product for Raman spectroscopy, as well as a sample for finding out Raman scattering from the good point out.
Figure 4 Beam radius variation on The 2 crystals although switching the focal duration from the thermal lensing effect.
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