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 often a remarkable materials that plays a vital position in laser know-how. Its primary functionality is to crank out ultrashort pulses of light, spanning just some hundred femtoseconds.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the heart beat
FIG. four. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of a laser with an oblong active component for an output electric power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with immediate longitudinal pumping by impressive linear arrays of semiconductor injection lasers acquiring fiber output. To forestall spectral narrowing for the duration of amplification as well as the corresponding lengthening from the amplified pulse when it is compressed, a combination of two Yb:KYW crystals had been made use of, Along with the spectral maxima in the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
After air drying and subsequent cleansing with a cotton cloth soaked in Alcoholic beverages, the film floor confirmed no signs of peeling or scratches.
FIG. 1. Optical structure of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output
5 mm apart from the middle with the beam caustic. In order to check the method matching simulation, we performed the experiment with Ng-Minimize crystal oscillator, which was created previously As well as in a exact same ailment with simulation [eleven]. As proven in Figure 3(b) with pink dots and line, the CW output energy is extremely depending on the posture of laser crystal plus the experimental outcome coincides properly with simulation end result. For a note, multimode operation occurred in experiment when the dimension in the pump beam click here is much larger than TEM00 cavity manner and it results in bigger CW output power in the displacement location down below 3.5 mm.
For tungstates, the ytterbium doping focus can be extremely high with out important quenching since the replaced ions have an extremely related ion radius, plus the inter-ion length is fairly substantial.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW mainly because of the similar sizes of such chemical factors as much as 100% of Yb-doping might be obtained.
The thermal conductivity of popular double tungstates is on the order to 3–four W/(K m) �?which is not bad when compared with other laser crystals (Though quite a few instances fewer than for YAG), and relatively significant in contrast With all the thermal conductivity of regular Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is actually a exceptional materials that plays a very important role in laser technologies. Its Most important purpose is usually to produce ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
Question RP Photonics for any information regarding tungstate lasers, including femtosecond lasers and significant-energy lasers.