The KYW Crystal Diaries
The KYW Crystal Diaries
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In simple terms, the Yb:KYW crystal has found its specialized niche in significant-electricity laser programs as a result of its ability to generate high Strength ultrashort laser pulses when preserving a compact measurement. The interaction of its capabilities �?seamless ytterbium substitution, potent absorption qualities, ultrashort pulse era and effectiveness in Strength conversion �?positions the Yb:KYW crystal to be a cornerstone within the laser know-how, masking various fields ranging from scientific study to industrial apps.
This unique characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at minimal Over-all exposure, and drives purposes like deep-tissue multiphoton microscopy and large-precision eye surgical procedure
We current a twin-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output ability nearly 24 W and pulse duration of twenty ns,or to be a regenerative amplifier with output electrical power up to 21 W and pulse length underneath two hundred fs right after compression of chirped pulses. Both lasers have great beam quality with beam parameter M2
Colour-coded reflectivity of a Bragg mirror as a functionality of wavelength and angle on the incident beam.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to comparable measurements of these chemical elements nearly a hundred% of Yb-doping could be accomplished. This exclusive characteristic permits ytterbium to take the spot of yttrium with virtually no disruption towards the crystal’s lattice.
Adhesion Take a look at Compliant with MIL-C-675C military services requirements, an adhesion test involved applying a tape that meets LT-ninety technical specs on to the lens film layer. The tape was affixed completely then taken out vertically. This method was performed thrice, leading to no blistering or peeling.
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Spatial framework in the beam as well as the corresponding intensity profiles I on the output on the laser.
... at 50 %-peak were being created inside of a master oscillator with selfsynchronization from the axial modes, explained in our before post. 21 The new version in the laser, not like that described within our before post, applied an Yb:KYW crystal using an N pcut (optical axis N p of your index ellipsoid was parallel on the propagation path of your laser radiation), Together with the polarization of your created radiation directed together the N m axis.
... Don't just the position of crystal inside the cavity but additionally the amplification axis of crystal has an effect on the laser operation considerably, since the absorption and emission cross sections on the crystal are rather distinct based on the orientation of your crystal.
Whilst ytterbium-doped laser get media commonly exhibit a little quantum click here defect, ytterbium-doped tungstates enable for particularly smaller values. As an example, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW can be most successfully pumped all over 981 nm.
Li2WO4-WO3 flux was productively used reducing the growth temperature under 900 oC. According to single crystal x-ray measurements, the crystal corresponds to the P2/n Area group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, is usually a extraordinary materials that plays a very important job in laser technological innovation. Its Most important purpose will be to produce ultrashort pulses of light, spanning just some hundred femtoseconds.
At the same time, a shorter laser wavelength is usually obtained; it is possible to operate that has a quantum defect effectively down below 1%. To be a consequence, the warmth era could be so compact that this partly compensates the lessen thermal conductivity.