The Greatest Guide To KYW Crystal
The Greatest Guide To KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is very big in comparison with that of Yb:YAG. This permits for wide wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values perfectly beneath 100 fs are already realized with passive method locking.
This exceptional characteristic of ultrafast pulses permits nonlinear optical conversation with tissue at small Total exposure, and drives programs such as deep-tissue multiphoton microscopy and superior-precision eye surgery
Femtosecond laser based upon Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the pulse
The absorption and emission spectra of Yb:KYW Crystals Screen solid peaks at 980 nm and 1030 nm, respectively, ensuring economical Electrical power conversion and significant general performance in laser units.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW a result of the equivalent sizes of these chemical elements as many as 100% of Yb-doping may very well be obtained. This unique attribute permits ytterbium to go ahead and take put of yttrium with just about no disruption for the crystal’s lattice.
The monoclinic crystal structures results in a organic birefringence, helping to keep away from thermally induced polarization rotation and depolarization loss.
FIG. 1. Optical structure of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
five mm other than the center on the beam caustic. In order to Check out the manner matching simulation, we carried out the experiment with Ng-Slash crystal oscillator, which was produced Beforehand and in a very same condition with simulation [11]. As demonstrated in Figure 3(b) with purple dots and line, the CW output power is extremely depending on the situation of laser crystal plus the experimental result coincides very well with simulation result. Like a Observe, multimode Procedure occurred in experiment once the dimensions of the pump beam is greater than TEM00 cavity method and it results in higher CW output electrical power while in the displacement location down below three.5 mm.
For tungstates, the ytterbium doping concentration can be extremely significant with no considerable quenching because the changed ions have an incredibly comparable ion radius, and the inter-ion length is comparatively large.
... Not just the place of crystal inside the cavity but additionally the amplification axis of crystal has an effect on the laser operation considerably, because the absorption and emission cross sections with the crystal are quite unique based on the orientation of the crystal.
The thermal conductivity of popular double tungstates is in the order to 3–four W/(K m) �?which isn't poor in comparison with other laser crystals (Whilst numerous moments lower than for YAG), and quite big in contrast Using the thermal conductivity of common glasses.
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