Top KYW Crystal Secrets
Top KYW Crystal Secrets
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In functional phrases, the Yb:KYW crystal has located its specialized niche in high-power laser purposes due to its power to deliver significant Strength ultrashort laser pulses although sustaining a compact size. The interplay of its features �?seamless ytterbium substitution, solid absorption characteristics, ultrashort pulse technology and efficiency in Electrical power conversion �?positions the Yb:KYW crystal being a cornerstone within the laser technology, covering numerous fields ranging from scientific investigate to industrial programs.
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Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the heartbeat
FIG. 4. Autocorrelation function of the pulse 共a兲and spectrum 共b兲of a laser with a rectangular Lively aspect for an output electrical power of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers getting fiber output. To stop spectral narrowing during amplification as well as corresponding lengthening with the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals ended up utilized, with the spectral maxima on the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Just after air drying and subsequent cleaning that has a cotton fabric soaked in Alcoholic beverages, the film area showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are utilized as lasing materials to deliver ultrashort (~ one hundred-two hundred fs) significant energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
5 mm other than the center in the beam caustic. As a way to Verify the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was developed Beforehand and in a exact affliction with simulation [11]. As demonstrated in Figure three(b) with red dots and line, the CW output electric power is very dependent on the position of laser crystal plus the experimental end result coincides perfectly with simulation end result. To be a Notice, multimode Procedure happened in experiment once the dimensions of the pump beam is greater than TEM00 cavity manner and it causes greater CW output electricity during the displacement region down below 3.5 mm.
For tungstates, the ytterbium doping concentration can be extremely high with no significant quenching because the replaced ions have an exceedingly very similar ion radius, and also the inter-ion length is pretty large.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the identical measurements of these chemical features as many as one hundred% of Yb-doping could possibly be achieved.
Whilst ytterbium-doped laser obtain media normally exhibit a small quantum defect, ytterbium-doped tungstates enable for specifically modest values. By way of example, a more info 1030-nm Yb:YAG laser would Generally be pumped all around 940 nm, whereas Yb:KGW or Yb:KYW might be most effectively pumped about 981 nm.
Li2WO4-WO3 flux was effectively utilized cutting down The expansion temperature below 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n Area group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, is really a remarkable material that performs a vital part in laser engineering. Its Main functionality is to deliver ultrashort pulses of light, spanning just some hundred femtoseconds.
Talk to RP Photonics for just about any advice relating to tungstate lasers, such as femtosecond lasers and significant-energy lasers.