Considerations To Know About KYW Crystal
Considerations To Know About KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is rather substantial compared with that of Yb:YAG. This enables for large wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values well below a hundred fs are actually attained with passive method locking.
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Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing inside a regenerative amplifier by spectral profiling of the pulse
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Optical structure of the laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output with the radiation, WP is really a 50 %-wave plate, CL is usually a collimating lens, FL is often a concentrating lens, AE can be an Energetic aspect made from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC is the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
Adhesion Check Compliant with MIL-C-675C navy benchmarks, an adhesion test concerned making use of a tape that satisfies LT-ninety specifications onto the lens film layer. The tape was affixed entirely after which you can removed vertically. This technique was done 3 times, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are utilised as lasing elements to deliver ultrashort (~ 100-two hundred fs) high power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser units.
5 mm in addition to the center of the beam caustic. So as to Verify the manner matching simulation, we performed the experiment with Ng-Slice crystal oscillator, which was created Beforehand and in a similar situation with simulation [eleven]. As revealed in Figure three(b) with crimson dots and line, the CW output electrical power is very dependent on the situation of laser crystal and the experimental end result coincides perfectly with simulation outcome. For a note, multimode operation transpired in experiment in the event the sizing of the pump beam is more substantial than TEM00 cavity manner and it causes greater CW output electricity during the displacement region beneath 3.5 mm.
For tungstates, the ytterbium doping focus can be quite higher without sizeable quenching since the replaced ions have a very identical ion radius, along with the inter-ion distance is pretty massive.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW mainly because of the very similar measurements of those chemical components as much as a hundred% of Yb-doping can be realized.
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Concurrently, a shorter laser wavelength is usually received; it is achievable to function that has a quantum defect very well underneath one%. Like a consequence, the heat generation might be so little this partly compensates the decrease thermal conductivity.