Top KYW Crystal Secrets
Top KYW Crystal Secrets
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We existing a twin-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output power up to 24 W and pulse length of twenty ns,or for a regenerative amplifier with output ability nearly 21 W and pulse period down below two hundred fs soon after compression of chirped pulses. Both equally lasers have great beam high-quality with beam parameter M2
FIG. four. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output electricity of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by strong linear arrays of semiconductor injection lasers possessing fiber output. To avoid spectral narrowing in the course of amplification and also the corresponding lengthening of the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals ended up employed, Using the spectral maxima of the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
The monoclinic crystal structures ends in a all-natural birefringence, helping to avoid thermally induced polarization rotation and depolarization decline.
Raman, luminescence and transmission spectra expose optical capabilities owing into the presence of thulium ions, and therefore the elements could possibly be additional studied from the scope click here of laser and luminescence purposes.
Tungstates are inclined to obtain high Raman coefficients (�?Raman scattering). As a result, they could create important Raman attain at reasonable optical intensities. It is feasible to make use of the laser crystal by itself being a Raman converter.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW as a result of comparable sizes of such chemical aspects up to a hundred% of Yb-doping may very well be achieved.
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At the same time, a shorter laser wavelength might be attained; it is feasible to function with a quantum defect perfectly below one%. As being a consequence, the warmth generation is often so little this partly compensates the lower thermal conductivity.