Top KYW Crystal Secrets
Top KYW Crystal Secrets
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In simple terms, the Yb:KYW crystal has observed its niche in substantial-energy laser programs resulting from its capability to produce higher Power ultrashort laser pulses even though sustaining a compact size. The interplay of its options �?seamless ytterbium substitution, solid absorption features, ultrashort pulse technology and performance in Vitality conversion �?positions the Yb:KYW crystal being a cornerstone within the laser technological innovation, covering numerous fields ranging from scientific exploration to industrial apps.
This special characteristic of ultrafast pulses allows nonlinear optical interaction with tissue at minimal Over-all exposure, and drives programs for example deep-tissue multiphoton microscopy and high-precision eye surgical procedures
Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the pulse
FIG. 4. Autocorrelation operate of the pulse 共a兲and spectrum 共b兲of the laser with an oblong active ingredient for an output ability of seven-hundred mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW because of the similar dimensions of those chemical elements nearly one hundred% of Yb-doping could possibly be achieved. This one of a kind characteristic permits ytterbium to go ahead and take position of yttrium with just about no disruption on the crystal’s lattice.
The monoclinic crystal constructions leads to a organic birefringence, helping to keep away from thermally induced polarization rotation and depolarization reduction.
FIG. one. Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD click here is undoubtedly an IPG Photonics laser diode with fiber output
Tungstates tend to get high Raman coefficients (�?Raman scattering). For that reason, they will make substantial Raman gain at average optical intensities. It is feasible to use the laser crystal itself like a Raman converter.
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By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to the very similar measurements of these chemical aspects as much as one hundred% of Yb-doping might be achieved.
The thermal conductivity of frequent double tungstates is of the get to 3–4 W/(K m) �?which isn't undesirable in comparison with other laser crystals (Even though several times lower than for YAG), and reasonably massive when compared While using the thermal conductivity of typical Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is often a extraordinary content that performs a very important role in laser engineering. Its Key function would be to generate ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
At the same time, a shorter laser wavelength could be received; it can be done to work having a quantum defect effectively below 1%. For a consequence, the warmth technology is usually so small that this partly compensates the reduce thermal conductivity.