Fascination About KGW Crystal
Fascination About KGW Crystal
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We used a transmission grating (TG) like a dispersive element within our stretcher and compressor. A compact configuration was adopted, where by the stretcher plus the compressor shared one grating similar to that in Ref.
Determine 7 demonstrates the calculated dispersion compensation final result. The compressed pulse period is around 185 fs in the event the length of input pulses is a hundred and fifty fs. The discrepancy among them will probably be considerably decreased with an extended pulse enter mainly because uncompensated superior-purchase dispersion issues considerably less for longer pulses. This configuration was utilized to demonstrate the compressibility of our amplified pulses at the preliminary stage of our whole system. Down the road we might undertake a grating-pair compressor for wonderful compensation for prime-purchase dispersion.
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The blended attain is sophisticated and will be calculated less than distinctive pumping ailments because of the quasi-3-degree method actions on the Yb-doped gain medium. The blueshift, with a person peak from 1037 nm beneath the same crystal placement orientation to 1035 nm underneath the orthogonal crystal placement orientation, could end result through the reabsorption losses at a lengthy wavelength in the crystal where by the laser polarization is parallel to its Nm -axis, building the gain at 1035 nm higher than that at 1037 nm underneath orthogonal orientation.
Inquire RP Photonics for any guidance regarding tungstate lasers, together with femtosecond lasers and large-electrical power lasers.
Figure four Beam radius variation on the two crystals when shifting the focal duration with the thermal lensing effect.
The Martinez stretcher stretched the seed pulses to ~250 ps with 1600 grooves/mm grating. The enter of your stretcher (incident angle: 52°) and that in the compressor incident on the grating have been through the very same aspect; for this reason, a slight angular tuning from the grating might be produced to obtain the best compression final result. From the compressor, the enter angle within the grating and the distance between the interpretation stage (S1) and also the transmission grating (TG) were being meant to compensate to the stretcher dispersion and all dispersion introduced via the resources.
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Determine 4 Beam radius variation on The 2 crystals even though altering the focal duration in the thermal lensing effect.
Both energies are marked from the dashed lines as well as their values are labeled from the plots. The similar characteristics have been also observed in KGW and YAG crystals, whose spectral broadening dynamics are demonstrated for any comparison in Fig. 4.