Top KYW Crystal Secrets
Top KYW Crystal Secrets
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In sensible terms, the Yb:KYW crystal has located its market in superior-energy laser purposes because of its capability to deliver large Electricity ultrashort laser pulses even though retaining a compact measurement. The interplay of its attributes �?seamless ytterbium substitution, powerful absorption properties, ultrashort pulse generation and efficiency in Vitality conversion �?positions the Yb:KYW crystal to be a cornerstone from the laser technological innovation, masking assorted fields ranging from scientific research to industrial purposes.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a impressive substance that performs a significant job in laser technology. Its Main operate is usually to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
time. Crystals in the compound melts congruently at 1007 oC, nonetheless soften crystallization of high quality crystal is unachievable as a consequence of stage changeover at ~920 oC. The very best seeded solution system from
Color-coded reflectivity of the Bragg mirror as a perform of wavelength and angle from the incident beam.
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers having fiber output. To circumvent spectral narrowing all through amplification plus the corresponding lengthening on the amplified pulse when it's compressed, a combination of two Yb:KYW crystals were being employed, Using the spectral maxima of your amplification shifted relative to each other and with spectral profiling from the amplified radiation.
Adhesion Take a look at Compliant with MIL-C-675C military services expectations, an adhesion take a look at involved making use of a tape that fulfills LT-90 specifications onto the lens film layer. The tape was affixed completely after which eliminated vertically. This course of action was done three times, resulting in no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and so are used as lasing resources to create ultrashort (~ 100-two hundred fs) superior ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser units.
Spatial construction in the beam along with the corresponding intensity profiles I with the output on the laser.
For tungstates, the ytterbium doping concentration can be quite high devoid of significant quenching since the changed ions have an extremely very similar ion radius, plus the inter-ion length is comparatively substantial.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the related sizes of these chemical factors nearly 100% of Yb-doping may very well be accomplished.
Although ytterbium-doped laser achieve media frequently exhibit a little quantum defect, ytterbium-doped tungstates permit more info for specifically modest values. One example is, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW can be most competently pumped all over 981 nm.
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