The Single Best Strategy To Use For KYW Crystal
The Single Best Strategy To Use For KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very big when compared with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from mode-locked lasers. Values very well down below a hundred fs have been achieved with passive manner locking.
This exceptional characteristic of ultrafast pulses enables nonlinear optical conversation with tissue at minimal All round exposure, and drives apps for example deep-tissue multiphoton microscopy and large-precision eye surgery
time. Crystals of your compound melts congruently at 1007 oC, having said that soften crystallization of high quality crystal is unachievable resulting from stage changeover at ~920 oC. The best seeded Remedy technique from
Shade-coded reflectivity of a Bragg mirror as being a operate of wavelength and angle on the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing in the course of amplification as well as corresponding lengthening with the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were utilized, Using the spectral maxima in the amplification shifted relative to one another and with spectral profiling of the amplified radiation.
After air drying and subsequent cleansing having a cotton cloth soaked in Alcoholic beverages, the film surface area confirmed no indications of peeling or scratches.
FIG. one. Optical format of the laser with direct pumping with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
5 mm other than the center from the beam caustic. As a way to Verify the mode matching simulation, we executed the experiment with Ng-Minimize crystal oscillator, which was produced Formerly As well as in a same ailment with simulation [11]. As revealed in Figure three(b) with crimson dots and line, the CW output power is extremely depending on the position of laser crystal plus the experimental outcome coincides nicely with simulation final result. As being a Be get more info aware, multimode operation occurred in experiment once the sizing in the pump beam is larger sized than TEM00 cavity mode and it results in greater CW output electric power in the displacement region under three.5 mm.
For tungstates, the ytterbium doping concentration can be extremely higher devoid of substantial quenching since the changed ions have a really very similar ion radius, and the inter-ion distance is relatively huge.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW as a result of very similar measurements of such chemical components up to a hundred% of Yb-doping can be obtained.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, is a remarkable product that plays an essential job in laser technological know-how. Its Major function is usually to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
At the same time, a shorter laser wavelength is often obtained; it is achievable to operate that has a quantum defect nicely underneath 1%. Like a consequence, the warmth generation could be so compact that this partly compensates the reduced thermal conductivity.