Fascination About KYW Crystal
Fascination About KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is rather large in comparison with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values perfectly below 100 fs are actually accomplished with passive mode locking.
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We existing a twin-crystal Yb:KGW laserthat iscapable to work to be a Q-switched oscillator with output power as much as 24 W and pulse length of 20 ns,or as being a regenerative amplifier with output electrical power around 21 W and pulse duration below two hundred fs after compression of chirped pulses. Both of those lasers have fantastic beam high-quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Screen sturdy peaks at 980 nm and 1030 nm, respectively, ensuring effective Electricity conversion and substantial general performance in laser programs.
Optical layout of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output of the radiation, WP is a 50 percent-wave plate, CL is really a collimating lens, FL is often a concentrating lens, AE is definitely an Lively factor constructed from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC would be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a natural birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization check here reduction.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and are utilized as lasing supplies to generate ultrashort (~ 100-two hundred fs) substantial electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
5 mm in addition to the center from the beam caustic. To be able to check the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was created Beforehand and in a exact affliction with simulation [11]. As shown in Determine 3(b) with crimson dots and line, the CW output energy is very dependent on the situation of laser crystal as well as the experimental final result coincides properly with simulation final result. As a Notice, multimode Procedure occurred in experiment once the sizing from the pump beam is more substantial than TEM00 cavity manner and it leads to better CW output electrical power from the displacement location underneath three.five mm.
For tungstates, the ytterbium doping focus can be extremely significant without important quenching since the changed ions have an incredibly comparable ion radius, and also the inter-ion distance is pretty large.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to related sizes of such chemical things approximately one hundred% of Yb-doping might be obtained.
Though ytterbium-doped laser gain media typically exhibit a small quantum defect, ytterbium-doped tungstates permit for notably modest 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 be most proficiently pumped around 981 nm.
This tandem of attributes has significantly-achieving implications, specifically in the development of compact yet powerfull lasers.
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