How Much You Need To Expect You'll Pay For A Good KYW Crystal
How Much You Need To Expect You'll Pay For A Good KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is very large compared with that of Yb:YAG. This allows for wide wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values nicely beneath 100 fs happen to be accomplished with passive mode locking.
This special characteristic of ultrafast pulses enables nonlinear optical interaction with tissue at reduced General publicity, and drives purposes for instance deep-tissue multiphoton microscopy and high-precision eye surgical procedure
time. Crystals of the compound melts congruently at 1007 oC, on the other hand soften crystallization of high quality crystal is difficult as a result of section transition at ~920 oC. The very best seeded solution system from
FIG. four. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular active factor for an output ability of 700 mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to similar sizes of such chemical things around a hundred% of Yb-doping may be attained. This special characteristic permits ytterbium to take the put of yttrium with practically no disruption to your crystal’s lattice.
The monoclinic crystal structures brings about a pure birefringence, helping to stay away from thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are applied as lasing products to crank out ultrashort (~ one hundred-200 fs) high ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser devices.
A large brightnessQ-switched oscillator and regenerative amplifier depending on a twin-crystal Yb:KGW laser
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Even so, as soon as Nd3+:YAG turned commercially obtainable, the interest in CaWO4 dropped sharply. In afterwards years, specific other tungstate crystals began to entice a great deal of attention.
Whilst ytterbium-doped laser obtain media frequently exhibit a little quantum defect, ytterbium-doped tungstates make it possible for for particularly small values. One example is, a 1030-nm Yb:YAG laser would Generally be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW may be most efficiently pumped about 981 nm.
Li2WO4-WO3 flux was successfully used reducing the growth temperature beneath 900 oC. As outlined by solitary crystal x-ray measurements, the crystal corresponds into the P2/n Area group.
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Simultaneously, a shorter laser wavelength is often acquired; it is possible to work using a quantum defect nicely down below 1%. As being a consequence, the warmth technology might be so little this partly compensates the reduced thermal conductivity.