An Unbiased View of KGW Crystal
An Unbiased View of KGW Crystal
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The pink-shifted Component of the SC is of simple importance, specifically for what concerns the overall performance of broadly tunable optical parametric amplifiers pumped by the elemental harmonics of Yb lasers. The dearth of seed photons while in the prolonged-wavelength region of the SC spectrum restrictions the amplification performance and brings about pulse-to-pulse Strength fluctuations across the degeneracy location of the optical parametric amplifier. This part is quantified in Fig. 6a by plotting the SC spectra concerning spectral energy density, which was approximated by measuring the energy with the axial Section of SC radiation (that is the one virtually handy Portion of SC emission). KGW crystal makes the best spectral Strength density during the 1200�?450 nm variety, as famous inside of a modern study30.
The datasets utilized and/or analysed during the current examine obtainable in the corresponding writer on affordable ask for.
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Eventually, we investigated the prolonged-phrase performances of SC generation in crystal samples under optimum pumping situations at larger laser repetition premiums. In doing so, the crystal samples were not translated and stored inside a stationary position with regard for the pump beam in the entire measurement. The illustrations illustrating robust long-expression performances of SC generation in KGW and YAG crystals at superior laser repetition costs could possibly be discovered in other places. Much more particularly, steady efficiency of KGW crystal at two MHz pulse repetition price below pretty equivalent pump beam concentrating geometry was noted recently30, While YAG crystal shown steady efficiency for several hours at 200 kHz pulse repetition charge Despite having very tight concentrating of the pump beam (NA=0.085)32. The extensive-phrase overall performance tests in LSO, LYSO and YSO unveiled gradual narrowing with the SC spectra to the very long-wavelength aspect that occurred right after a particular exposure time and will be attributed on the optical degradation of these products. As an illustration, in LSO, the onset of spectral narrowing was noticed after (sim 20) minutes at a laser repetition level of get more info ten kHz, although at a laser repetition rate of twenty kHz, steady SC technology overall performance was noticed just for roughly 2 min.
Thermal results are considerably scaled-down in KGW. This along with the superior problems threshold make the crystal a superb applicant for energy scaling. Comparing Ba(NO3)two and KGW for Raman application Ba(NO3)2 are more practical in the event of ns pulses and KGW �?in the event of ps pulses.
We produced a diode-pumped Yb:KGW regenerative amplifier since the front end with the kilohertz terawatt laser method. Wide bandwidth pulses have been acquired by implementing twin crystals with distinct orientations of their optical axes[
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KGW has a solid Raman spectrum that extends from the ultraviolet to the in the vicinity of infrared, rendering it useful for A selection of programs. The crystal can be employed to be a reference material for Raman spectroscopy, in addition to a sample for finding out Raman scattering from the reliable condition.
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