KYW Crystal Things To Know Before You Buy
KYW Crystal Things To Know Before You Buy
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is rather large in contrast with that of Yb:YAG. This permits for extensive wavelength tunability and for A lot shorter pulse durations from method-locked lasers. Values perfectly below one hundred fs are achieved with passive manner locking.
This distinctive attribute of ultrafast pulses allows nonlinear optical interaction with tissue at reduced In general exposure, and drives apps including deep-tissue multiphoton microscopy and superior-precision eye surgical procedure
time. Crystals of your compound melts congruently at 1007 oC, however soften crystallization of top quality crystal is unattainable because of stage changeover at ~920 oC. The highest seeded Remedy technique from
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 ability of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it's compressed, a mix of two Yb:KYW crystals had been utilized, with the spectral maxima of your amplification shifted relative to each other and with spectral profiling from the amplified radiation.
After air drying and subsequent cleansing having a cotton fabric soaked in alcohol, the movie surface showed no indications of peeling or scratches.
FIG. one. Optical layout of the laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
5 mm in addition to the middle with the beam caustic. So as to Check out the mode matching simulation, we performed the experiment with Ng-Slice crystal oscillator, which was designed Formerly As well as in a similar problem with simulation [eleven]. As demonstrated in Determine 3(b) with pink dots and line, the CW output electrical power is very dependent on the posture of laser crystal as well as the experimental outcome coincides perfectly with simulation consequence. As being a Take note, multimode operation transpired in experiment when the dimensions in the pump beam is larger than TEM00 cavity method and it will cause greater CW output electric power in the read more displacement area underneath three.five mm.
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By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the equivalent dimensions of those chemical features around a hundred% of Yb-doping could possibly be obtained.
While ytterbium-doped laser obtain media normally show a little quantum defect, ytterbium-doped tungstates permit for significantly compact values. One example is, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most successfully pumped all around 981 nm.
This tandem of attributes has much-achieving implications, especially in the development of compact nonetheless powerfull lasers.
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