The Definitive Guide to KYW Crystal
The Definitive Guide to KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is actually a amazing content that performs an essential position in laser technology. Its Major purpose is to create ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the pulse
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with a rectangular Lively component for an output power of seven hundred mW. The width of
Ultrafast lasers, with pulse widths of a few picoseconds (10−twelve s) or much less, allow time resolution essential in laser-energized fluorescence life span spectroscopy and imaging techniques.In addition, they provide substantial pulse peak powers at significant repetition fees and average ordinary output powers.
In advance of the development of Nd:YAG, Nd3+:CaWO4 was a vital rare-earth-doped laser obtain medium. It absolutely was in reality Utilized in the initial continuously working crystal laser.
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Tungstates tend to get substantial Raman coefficients click here (�?Raman scattering). Thus, they might generate substantial Raman acquire at moderate optical intensities. It is feasible to make use of the laser crystal itself like a Raman converter.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to the equivalent sizes of such chemical features as many as one hundred% of Yb-doping could possibly be accomplished.
The thermal conductivity of typical double tungstates is of the buy to 3–4 W/(K m) �?which isn't negative in contrast with other laser crystals (although various moments lower than for YAG), and fairly substantial in contrast with the thermal conductivity of regular glasses.
Li2WO4-WO3 flux was correctly used reducing the growth temperature below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds for the P2/n Room group.
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