KYW Crystal - An Overview
KYW Crystal - An Overview
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is extremely large in comparison with that of Yb:YAG. This permits for huge wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values well underneath 100 fs are actually attained with passive manner locking.
This one of a kind attribute of ultrafast pulses allows nonlinear optical interaction with tissue at reduced All round publicity, and drives programs which include deep-tissue multiphoton microscopy and higher-precision eye surgical procedures
time. Crystals with the compound melts congruently at 1007 oC, nevertheless soften crystallization of high quality crystal is extremely hard as a consequence of stage transition at ~920 oC. The highest seeded solution approach from
Coloration-coded reflectivity of a Bragg mirror for a perform of wavelength and angle with the incident beam.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the very similar dimensions of these chemical features nearly a hundred% of Yb-doping may very well be realized. This one of a kind attribute permits ytterbium to go ahead and take put of yttrium with virtually no disruption towards the crystal’s lattice.
The monoclinic crystal structures brings about a all-natural birefringence, helping to stay clear of thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are utilised as lasing resources to produce ultrashort (~ 100-200 fs) large ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
five mm apart from the center with the beam caustic. To be able to Examine the manner matching simulation, we executed the experiment with Ng-Reduce crystal click here oscillator, which was formulated Formerly and in a identical ailment with simulation [eleven]. As revealed in Determine 3(b) with pink dots and line, the CW output electrical power is very depending on the situation of laser crystal along with the experimental consequence coincides effectively with simulation result. Being a Be aware, multimode Procedure happened in experiment when the measurement from the pump beam is larger than TEM00 cavity mode and it brings about higher CW output electricity during the displacement location down below 3.five mm.
For tungstates, the ytterbium doping concentration can be quite high without the need of important quenching as the replaced ions have an incredibly similar ion radius, and the inter-ion distance is pretty big.
... Not simply the situation of crystal from the cavity but will also the amplification axis of crystal has an effect on the laser Procedure greatly, because the absorption and emission cross sections of the crystal are fairly various according to the orientation in the crystal.
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This tandem of characteristics has much-reaching implications, specially in the construction of compact yet powerfull lasers.
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