The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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Previous do the job confirmed that the dual-crystal configuration can be used to compensate to the thermal lensing influence[
The thermal conductivity of prevalent double tungstates is of your get to 3–4 W/(K m) �?which isn't poor as opposed with other laser crystals (although various times lower than for YAG), and relatively large when compared Using the thermal conductivity of common glasses.
We utilised a transmission grating (TG) like a dispersive component inside our stretcher and compressor. A compact configuration was adopted, in which the stretcher as well as compressor shared a person grating much like that in Ref.
Simultaneously, a shorter laser wavelength is usually acquired; it is possible to function which has a quantum defect very well beneath one%. As a consequence, the heat technology might be so small this partly compensates the decreased thermal conductivity.
The monoclinic crystal constructions results in a organic birefringence, assisting to stay away from thermally induced polarization rotation and depolarization reduction.
Right before the event of Nd:YAG, Nd3+:CaWO4 was a very important scarce-earth-doped laser attain medium. It was in truth Employed in the primary continuously running crystal laser.
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The combined attain is advanced and may be measured beneath various pumping situations as a result of quasi-3-degree program actions on the Yb-doped gain medium. The blueshift, with just one peak from 1037 nm beneath the very same crystal placement orientation to 1035 nm underneath the orthogonal crystal placement orientation, could consequence in the reabsorption losses at a lengthy wavelength in the crystal exactly where the laser polarization is parallel to its Nm -axis, producing the acquire at 1035 nm better than that at 1037 nm less than orthogonal orientation.
Thermal consequences are considerably more compact in KGW. This together with the high harm threshold make the crystal a fantastic prospect for electric power scaling. Evaluating Ba(NO3)two and KGW for Raman software Ba(NO3)two are more practical in the event of ns pulses and KGW �?in the event of ps pulses.
The two-pump laser could offer you nearly a hundred and twenty W energy. Approximately 60% of the most pump electrical power was utilized within our experiment thinking about the lower effectiveness with the dichroic mirrors. Beneath this twin-crystal configuration, our cavity supports a one hundred W pump electric power input, as talked about in Portion 2.2. Substantial-quality dichroic mirrors will probably be employed Down the road, and laser pulses will likely be stretched to a longer pulse length.
Despite the fact that BGO, GGG, YSO, LSO and LYSO sometimes function laser hosts37, They can be mainly discovered as economical scintillators, whose scintillation Homes are studied very well38. Nevertheless, the nonlinear optical Attributes of these crystals and so their likely to serve as nonlinear resources for SC generation especially, and some other experiments relating to nonlinear propagation of rigorous more info femtosecond laser pulses, remain quite improperly examined. Up to now, GGG, LT23,twenty five and YSO24 have been only sketchily analyzed for SC technology with Ti:sapphire laser pumping, nevertheless, to the most effective of our awareness, none of the investigated products were being examined with Yb-laser pumping, especially for what worries their general performance at very higher (tens to numerous kHz) pulse repetition premiums.
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