Facts About KYW Crystal Revealed
Facts About KYW Crystal Revealed
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is very large when compared with that of Yb:YAG. This allows for vast wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values properly down below one hundred fs have already been reached with passive mode locking.
The comparison with glasses is acceptable Considering that the massive attain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals on the compound melts congruently at 1007 oC, nonetheless soften crystallization of top quality crystal is unachievable on account of phase changeover at ~920 oC. The very best seeded solution approach from
The absorption and emission spectra of Yb:KYW Crystals display robust peaks at 980 nm and 1030 nm, respectively, making certain successful Vitality conversion and substantial performance in laser techniques.
This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing throughout amplification and also the corresponding lengthening from the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals had been utilized, With all the spectral maxima of the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
Immediately after air drying and subsequent cleaning which has a cotton fabric soaked in Liquor, the movie area confirmed no signs of peeling or scratches.
Raman, luminescence and transmission spectra expose optical attributes owing for the existence of thulium ions, and therefore the products can be further analyzed from the scope of laser and luminescence purposes.
5 mm besides the middle from the beam caustic. To be able to Look at the manner matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was designed Earlier and in a similar issue with simulation [eleven]. As revealed in Determine three(b) with red dots and line, the CW output energy is highly dependent on the situation of laser crystal and the experimental outcome coincides properly with simulation consequence. For a Be aware, multimode Procedure transpired in experiment when the sizing of the pump beam is larger than TEM00 cavity method and it results in better CW output electric power from the displacement area below three.five mm.
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By substituting yttrium with website ytterbium during the crystal lattice of Yb:KYW as a result of related sizes of such chemical factors up to a hundred% of Yb-doping could be accomplished.
The thermal conductivity of prevalent double tungstates is in the purchase to 3–4 W/(K m) �?which isn't negative when compared with other laser crystals (Even though a number of moments below for YAG), and reasonably huge in comparison Using the thermal conductivity of common Eyeglasses.
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