The smart Trick of KGW Crystal That No One is Discussing
The smart Trick of KGW Crystal That No One is Discussing
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The thermal conductivity of prevalent double tungstates is of your purchase to 3–four W/(K m) �?which is not bad when compared with other laser crystals (While a number of instances under for YAG), and rather significant as opposed With all the thermal conductivity of typical glasses.
We made use of a transmission grating (TG) like a dispersive ingredient within our stretcher and compressor. A compact configuration was adopted, exactly where the stretcher and also the compressor shared one particular grating comparable to that in Ref.
Thus You can find small flexibility for optimizing the dispersion compensation influence. Sub-two hundred fs pulses is usually envisioned by using a broader bandwidth seed input. Due to the twin-crystal configuration, the laser cavity delivers a near diffraction confined laser beam with M
Its pump laser requirements a short pulse length, a very low time jitter, and sleek temporal and spatial distributions because of the intrinsic instantaneous approach. Thus, the OPCPA program is a lot more complex and highly-priced.
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In the future, We'll undertake a laser seed with a broader spectral bandwidth and utilize an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to help make comprehensive use of your achieve bandwidth of our regenerative amplifier.
Finally, we investigated the extended-time period performances of SC generation in crystal samples less than ideal pumping conditions at better laser repetition costs. In doing so, the crystal samples weren't translated and retained in a stationary position with respect into the pump beam during the full measurement. The examples illustrating sturdy extensive-term performances of SC technology in KGW and YAG crystals at large laser repetition premiums might be uncovered in other places. Extra precisely, stable general performance of KGW crystal at two MHz pulse repetition fee below very similar pump beam concentrating geometry was documented recently30, whereas YAG crystal shown steady efficiency for various several hours at two hundred kHz pulse repetition fee Despite quite limited focusing in the pump beam (NA=0.085)32. The lengthy-term general performance assessments in LSO, LYSO and YSO uncovered gradual narrowing from the SC spectra to the very long-wavelength aspect that transpired following a certain publicity time and will be attributed on the optical degradation of those elements. For example, in LSO, the onset of spectral narrowing was noticed immediately after (sim 20) minutes at a laser repetition rate of ten kHz, when at a laser repetition rate of twenty kHz, stable SC technology effectiveness was observed just for roughly 2 min.
Thermal effects are appreciably smaller in KGW. This together with the significant problems threshold make the crystal a fantastic prospect for electrical power scaling. Comparing Ba(NO3)2 and KGW for Raman software Ba(NO3)two are simpler in the event of ns pulses and KGW �?in case of ps pulses.
We formulated a diode-pumped Yb:KGW regenerative amplifier because the entrance close with the kilohertz terawatt laser method. Broad bandwidth pulses ended up acquired by making use of twin crystals with different orientations of their optical axes[
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-switched laser output underneath the two crystal placement configurations. The black line denotes the configuration Along with the crystals placed in the exact same orientation, website although the purple line is beneath the configuration of crystals positioned in orthogonal orientation.
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