KYW Crystal Secrets
KYW Crystal Secrets
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The comparison with glasses is acceptable since the huge get bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
We current a dual-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output electrical power around 24 W and pulse size of twenty ns,or being a regenerative amplifier with output electrical power approximately 21 W and pulse duration underneath 200 fs after compression of chirped pulses. The two lasers have fantastic beam quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Exhibit solid peaks at 980 nm and 1030 nm, respectively, making certain economical Vitality conversion and high performance in laser programs.
Ultrafast lasers, with pulse widths of a few picoseconds (ten−12 s) or much less, permit some time resolution needed in laser-excited fluorescence life time spectroscopy and imaging tactics.In addition, they provide higher pulse peak powers at higher repetition costs and average average output powers.
Adhesion Take a look at Compliant with MIL-C-675C military services benchmarks, an adhesion test associated making use of a tape that fulfills LT-ninety specs on to the lens click here film layer. The tape was affixed totally and after that eradicated vertically. This technique was done thrice, leading to no blistering or peeling.
FIG. 1. Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Spatial composition from the beam and also the corresponding depth profiles I for the output of your laser.
For tungstates, the ytterbium doping concentration can be extremely significant with no considerable quenching since the changed ions have an incredibly related ion radius, as well as the inter-ion length is pretty large.
... Not only the posture of crystal from the cavity but will also the amplification axis of crystal influences the laser Procedure tremendously, as the absorption and emission cross sections in the crystal are quite unique in accordance with the orientation of your crystal.
Although ytterbium-doped laser attain media generally show a small quantum defect, ytterbium-doped tungstates enable for particularly modest values. One example is, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, While Yb:KGW or Yb:KYW could possibly be most successfully pumped about 981 nm.
This tandem of characteristics has considerably-reaching implications, specially in the development of compact however powerfull lasers.
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