Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a impressive substance that performs a significant purpose in laser technology. Its primary functionality will be to make ultrashort pulses of light, spanning only a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in gentle absorption at all-around 981 nm tends to make the crystal well suited for diode pumping. It really is further more Increased by its outstanding efficiency in this process, coupled with its reduced quantum defect.
Coloration-coded reflectivity of the Bragg mirror for a purpose of wavelength and angle on the incident beam.
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing during amplification plus the corresponding lengthening on the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been used, Along with the spectral maxima in the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
Adhesion Test Compliant with MIL-C-675C armed forces criteria, an adhesion take a look at associated applying a tape that fulfills LT-90 technical specs on to the lens movie layer. The tape was affixed absolutely and after that eliminated vertically. This method was performed thrice, causing no blistering or peeling.
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Spatial construction in the beam as well as the corresponding intensity profiles I within the output with the laser.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the related dimensions of those chemical aspects as many as 100% of Yb-doping can be obtained.
The thermal conductivity of frequent double tungstates is on the get to 3–4 W/(K m) �?which isn't terrible compared with other click here laser crystals (Though various situations lower than for YAG), and reasonably large as opposed Using the thermal conductivity of standard glasses.
Li2WO4-WO3 flux was correctly used reducing The expansion temperature down below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds to the P2/n space team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature were measured. The emission spectrum and lifetime from the 3 F 4 fired up condition have been decided. Working with typical and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes ended up calculated and fantastic settlement with the experimental results was attained for both theories.
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