KYW Crystal Secrets
KYW Crystal Secrets
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The comparison with glasses is acceptable For the reason that huge acquire bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We current a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output electric power as much as 24 W and pulse size of twenty ns,or being a regenerative amplifier with output power up to 21 W and pulse period beneath two hundred fs right after compression of chirped pulses. Each lasers have great beam excellent with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Screen robust peaks at 980 nm and 1030 nm, respectively, ensuring economical Electricity conversion and significant performance in laser units.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing for the duration of amplification and the corresponding lengthening on the amplified pulse when it is compressed, a combination of two Yb:KYW crystals ended up made use of, Together with the spectral maxima of the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
Adhesion Test Compliant with MIL-C-675C military benchmarks, an adhesion exam included implementing a tape that fulfills LT-90 requirements on to the lens film layer. The tape was affixed totally and then taken off vertically. This method was done 3 times, leading to no blistering or peeling.
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A high brightnessQ-switched oscillator and regenerative amplifier dependant on a dual-crystal Yb:KGW laser
... at half-height ended up produced inside of a learn oscillator with selfsynchronization of the axial modes, described inside our before report. 21 The new version of the laser, as opposed to that described inside our earlier short article, made use of an Yb:KYW crystal with the N pcut (optical axis N p on the index ellipsoid was parallel into the propagation course in the laser radiation), Along with the polarization with the produced radiation directed along the N m axis.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW as a result of similar sizes of these chemical features approximately a hundred% of Yb-doping may very well be accomplished.
Though ytterbium-doped laser attain media normally exhibit a small quantum defect, ytterbium-doped tungstates permit for specially compact values. By way of example, a 1030-nm Yb:YAG laser would normally be pumped close to 940 nm, While Yb:KGW or Yb:KYW might be most competently pumped all around 981 nm.
Li2WO4-WO3 flux was effectively utilized cutting down the growth temperature underneath 900 oC. Based on solitary crystal x-ray measurements, the crystal corresponds into the P2/n Room team.
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