KYW Crystal - An Overview
KYW Crystal - An Overview
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is quite big when compared with that of Yb:YAG. This allows for extensive wavelength tunability and for A great deal shorter pulse durations from mode-locked lasers. Values very well below 100 fs are achieved with passive mode locking.
This special characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at reduced General exposure, and drives apps for example deep-tissue multiphoton microscopy and large-precision eye surgical procedure
time. Crystals on the compound melts congruently at 1007 oC, having said that melt crystallization of high quality crystal is difficult resulting from section changeover at ~920 oC. The best seeded Resolution technique from
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of a laser with an oblong active factor for an output ability of 700 mW. The width of
Ultrafast lasers, with pulse widths of a few picoseconds (10−twelve s) or fewer, empower enough time resolution essential in laser-energized fluorescence life time spectroscopy and imaging strategies.In addition, they deliver high pulse peak powers at significant repetition costs and moderate ordinary output powers.
Ahead of the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser achieve medium. It absolutely was in reality Utilized in the initial consistently working crystal laser.
FIG. 1. Optical format of the laser with direct pumping with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
5 mm aside from the center of the beam caustic. As a way to check the manner matching simulation, we here done the experiment with Ng-Lower crystal oscillator, which was produced previously As well as in a similar issue with simulation [11]. As revealed in Figure 3(b) with purple dots and line, the CW output electrical power is highly dependent on the position of laser crystal as well as experimental consequence coincides nicely with simulation consequence. To be a Notice, multimode Procedure transpired in experiment in the event the dimension of your pump beam is greater than TEM00 cavity manner and it leads to increased CW output power while in the displacement location below 3.five mm.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the related sizes of those chemical factors as much as 100% of Yb-doping could be accomplished.
When ytterbium-doped laser attain media frequently show a small quantum defect, ytterbium-doped tungstates enable for specifically little values. For instance, a 1030-nm Yb:YAG laser would normally be pumped all-around 940 nm, While Yb:KGW or Yb:KYW could possibly be most effectively pumped around 981 nm.
Li2WO4-WO3 flux was productively used lessening The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds on the P2/n Place team.
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