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We present a dual-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output electric power nearly 24 W and pulse duration of twenty ns,or being a regenerative amplifier with output electricity approximately 21 W and pulse length down below two hundred fs immediately after compression of chirped pulses. Both of those lasers have great beam excellent with beam parameter M2

FIG. 4. Autocorrelation function of the heart beat 共a兲and spectrum 共b兲of a laser with a rectangular Lively component for an output ability of 700 mW. The width of

This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing through amplification along with the corresponding lengthening in the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been used, While using the spectral maxima on the amplification shifted relative to each other and with spectral profiling with the amplified radiation.

Following air drying and subsequent cleansing using a cotton fabric soaked in alcohol, the film area confirmed no indications of peeling or scratches.

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Spatial construction from the beam and also the corresponding depth profiles I within the website output with the laser.

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Nonetheless, when Nd3+:YAG turned commercially accessible, the curiosity in CaWO4 dropped sharply. In later on yrs, certain other tungstate crystals started to attract lots of focus.

Though ytterbium-doped laser gain media usually show a little quantum defect, ytterbium-doped tungstates allow for for particularly small values. For example, a 1030-nm Yb:YAG laser would normally be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most proficiently pumped close to 981 nm.

Li2WO4-WO3 flux was efficiently utilized lessening The expansion temperature beneath 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n space group.

The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature have been calculated. The emission spectrum and lifetime in the 3 F 4 enthusiastic condition have been decided. Applying standard and modified Judd–Ofelt theories, the depth parameters and the radiative lifetimes had been calculated and great agreement With all the experimental final results was acquired for each theories.

Simultaneously, a shorter laser wavelength could be obtained; it is achievable to operate which has a quantum defect effectively under one%. Like a consequence, the warmth generation is often so tiny this partly compensates the reduce thermal conductivity.