The smart Trick of KYW Crystal That Nobody is Discussing
The smart Trick of KYW Crystal That Nobody is Discussing
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is very large compared with that of Yb:YAG. This permits for vast wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values effectively under one hundred fs are actually accomplished with passive mode locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to operate being a Q-switched oscillator with output electric power as many as 24 W and pulse duration of twenty ns,or being a regenerative amplifier with output electricity approximately 21 W and pulse length beneath 200 fs following compression of chirped pulses. Each lasers have exceptional beam good quality with beam parameter M2
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular Energetic aspect for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the identical dimensions of such chemical components approximately 100% of Yb-doping could possibly be reached. This exceptional characteristic permits ytterbium to take the location of yttrium with nearly no disruption for the crystal’s lattice.
Adhesion Exam Compliant with MIL-C-675C army requirements, an adhesion examination included making use of a tape that fulfills LT-ninety requirements on to the lens movie layer. The tape was affixed thoroughly after which you can removed vertically. This process more info was performed 3 times, leading to no blistering or peeling.
Raman, luminescence and transmission spectra expose optical features owing towards the presence of thulium ions, and so the elements can be further studied in the scope of laser and luminescence applications.
Tungstates have a tendency to own significant Raman coefficients (�?Raman scattering). Consequently, they will deliver significant Raman gain at moderate optical intensities. It is feasible to use the laser crystal itself as a Raman converter.
... at fifty percent-height were being produced in the master oscillator with selfsynchronization of the axial modes, explained within our earlier short article. 21 The new version of the laser, in contrast to that explained within our before short article, employed an Yb:KYW crystal with an N pcut (optical axis N p with the index ellipsoid was parallel for the propagation direction with the laser radiation), With all the polarization of your generated radiation directed alongside the N m axis.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the comparable dimensions of those chemical components up to a hundred% of Yb-doping may very well be obtained.
While ytterbium-doped laser gain media typically exhibit a small quantum defect, ytterbium-doped tungstates enable for particularly compact values. As an example, a 1030-nm Yb:YAG laser would Usually be pumped close to 940 nm, While Yb:KGW or Yb:KYW might be most proficiently pumped all around 981 nm.
Li2WO4-WO3 flux was properly used reducing the growth temperature beneath 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds to your P2/n House team.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, is actually a outstanding material that performs a very important purpose in laser know-how. Its Major function should be to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Ask RP Photonics for almost any suggestions about tungstate lasers, which include femtosecond lasers and higher-ability lasers.