Facts About KGW Crystal Revealed

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We made use of a transmission grating (TG) to be a dispersive component in our stretcher and compressor. A compact configuration was adopted, where the stretcher and also the compressor shared a person grating much like that in Ref.

Besides its use like a Raman crystal, KGW can be Utilized in other optical programs, for example in laser devices and as being a scintillator in health-related imaging.

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Amplified pulses having an Electrical power over 2.5 mJ is often expected by implementing a better pump electric power for the regenerative amplifier and which makes it function for the saturation stage. The laser fluence of ~one J/cm2 on the dichroic mirrors is thought to become beneath the problems threshold of substantial-excellent dielectric-coated mirrors.

Having said that, once Nd3+:YAG grew to become commercially obtainable, the curiosity in CaWO4 dropped sharply. In later on a long time, specified other tungstate crystals began to attract many consideration.

Eventually, we investigated the extended-term performances of SC generation in crystal samples beneath ideal pumping problems at bigger laser repetition premiums. In doing this, the crystal samples were not translated and retained in a stationary situation with respect to the pump beam through the full measurement. The examples illustrating sturdy very long-time period performances of SC era in KGW and YAG crystals at significant laser repetition premiums may very well be found elsewhere. A lot more specially, stable efficiency of KGW crystal at two check here MHz pulse repetition fee less than pretty identical pump beam focusing geometry was documented recently30, While YAG crystal shown steady general performance for quite a few hours at 200 kHz pulse repetition rate Despite quite tight concentrating of your pump beam (NA=0.085)32. The extended-phrase performance assessments in LSO, LYSO and YSO uncovered gradual narrowing with the SC spectra around the long-wavelength aspect that happened just after a particular publicity time and could be attributed to your optical degradation of these products. By way of example, in LSO, the onset of spectral narrowing was noticed after (sim twenty) minutes at a laser repetition level of ten kHz, even though in a laser repetition level of twenty kHz, steady SC generation effectiveness was noticed just for roughly 2 min.

The particular spectra were being reconstructed by correcting the calculated spectra having an account to the filter transmission capabilities and to the sensitivity features from the spectrometers at the info publish-processing phase. The spectral dynamics in Just about every sample was measured by wonderful tuning the pump pulse Electrical power with a pc-managed attenuator that was integrated within the laser method. Thermal Electrical power meter EM (Ophir 3A-PF-twelve) was used to evaluate the SC Power which was thereafter utilized to work out the spectral Strength density on the SC radiation. Each of the measurements ended up carried out with no translation of the sample with respect towards the pump beam.

The 2-pump laser could offer up to 120 W ability. Roughly sixty% of the most pump ability was applied within our experiment thinking about the lower performance of the dichroic mirrors. Below this twin-crystal configuration, our cavity supports a 100 W pump energy enter, as mentioned in Section two.2. Significant-high quality dichroic mirrors might be employed in the future, and laser pulses are going to be stretched to a longer pulse length.

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-switched output spectrum of the regenerative amplifier supports a sub-a hundred and sixty fs pulse amplification. As a result, pulses with energies of nearly 2 mJ and period under two hundred fs might be attained making use of better-high quality dichroic mirrors in addition to a broader-spectrum laser seed. This regenerative amplifier operates as a very good pre-amplifier for more laser amplification.

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The origin from the factor's title arises from the English term 'potash,' this means pot ashes, and the Arabic word qali