KYW Crystal - An Overview
KYW Crystal - An Overview
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a extraordinary material that performs a crucial role in laser technologies. Its primary function is usually to crank out ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the heartbeat
Coloration-coded reflectivity of the Bragg mirror like a purpose of wavelength and angle of the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with immediate longitudinal pumping by effective linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing during amplification as well as corresponding lengthening on the amplified pulse when it really is compressed, a combination of two Yb:KYW crystals were being made use of, While using the spectral maxima on the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
Following air drying and subsequent cleansing with a cotton fabric soaked in Alcoholic beverages, the film floor confirmed no signs of peeling or scratches.
FIG. one. Optical layout of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is definitely an here IPG Photonics laser diode with fiber output
Tungstates tend to possess large Raman coefficients (�?Raman scattering). Thus, they might deliver substantial Raman obtain at reasonable optical intensities. It is feasible to make use of the laser crystal itself as being a Raman converter.
For tungstates, the ytterbium doping concentration can be quite high with no significant quenching because the replaced ions have an exceedingly comparable ion radius, plus the inter-ion distance is comparatively substantial.
Superior-electrical power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical purposes
Whilst ytterbium-doped laser obtain media commonly show a small quantum defect, ytterbium-doped tungstates enable for specially smaller values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW may be most proficiently pumped close to 981 nm.
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Check with RP Photonics for just about any advice relating to tungstate lasers, such as femtosecond lasers and superior-electrical power lasers.