Everything about KYW Crystal
Everything about KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is extremely substantial as opposed with that of Yb:YAG. This permits for broad wavelength tunability and for A great deal shorter pulse durations from mode-locked lasers. Values properly below one hundred fs are actually realized with passive method locking.
This unique attribute of ultrafast pulses permits nonlinear optical conversation with tissue at small All round publicity, and drives purposes like deep-tissue multiphoton microscopy and substantial-precision eye operation
The Yb:KYW crystal’s proficiency in light-weight absorption at around 981 nm tends to make the crystal well suited for diode pumping. It can be even more Improved by its outstanding performance in this process, coupled with its reduced quantum defect.
Colour-coded reflectivity of the Bragg mirror as being a functionality of wavelength and angle with the incident beam.
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers acquiring fiber output. To avoid spectral narrowing in the course of amplification and the corresponding lengthening of your amplified pulse when it's compressed, a combination of two Yb:KYW crystals have been applied, Using the spectral maxima from the amplification shifted relative to each other and with spectral profiling of your amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was an important unusual-earth-doped laser gain medium. It had been actually Utilized in the main continually working crystal laser.
FIG. one. Optical layout of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
A superior brightnessQ-switched oscillator and regenerative amplifier depending on a dual-crystal Yb:KGW laser
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Nevertheless, at the time Nd3+:YAG turned commercially accessible, the interest in CaWO4 dropped sharply. In afterwards many years, sure other tungstate crystals began to draw in loads of focus.
Whilst ytterbium-doped laser achieve media frequently show a little quantum defect, ytterbium-doped tungstates allow for for particularly small values. For instance, a 1030-nm Yb:YAG laser would Typically be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW might be most effectively pumped about 981 nm.
Li2WO4-WO3 flux was correctly used cutting down the growth temperature below 900 oC. In keeping with solitary crystal x-ray measurements, the crystal corresponds into the P2/n Room team.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is actually a extraordinary materials that performs a crucial job in laser technological innovation. Its primary perform should be to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
Ask RP Photonics for virtually any assistance concerning tungstate lasers, which include femtosecond lasers and substantial-energy lasers.