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The comparison with Eyeglasses is suitable For the reason that massive attain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in light-weight absorption at all-around 981 nm will make the crystal well matched for diode pumping. It can be even further Improved by its exceptional efficiency in this method, coupled with its lower quantum defect.
FIG. four. Autocorrelation operate of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong Energetic component for an output electric power of 700 mW. The width of
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the identical dimensions of these chemical aspects nearly 100% of Yb-doping might be attained. This exceptional attribute permits ytterbium to go ahead and take position of yttrium with pretty much no disruption to the crystal’s lattice.
The monoclinic crystal constructions results in a all-natural birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization decline.
Raman, luminescence and transmission spectra expose optical options owing into the existence of thulium ions, and for that reason the components could be additional researched from the scope of laser and luminescence programs.
A higher brightnessQ-switched oscillator and regenerative amplifier based upon a dual-crystal Yb:KGW laser
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Higher-electric power repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical apps
Even though ytterbium-doped laser attain media usually exhibit a small quantum defect, ytterbium-doped tungstates enable for specially small values. Such as, a 1030-nm Yb:YAG laser would Typically be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW might be most effectively pumped about 981 nm.
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Concurrently, a shorter laser wavelength could be obtained; it can be done to function with a quantum defect very well under one%. Being a consequence, the heat era can be so little this partly compensates the reduced thermal conductivity.