KYW Crystal Secrets
KYW Crystal Secrets
Blog Article
In realistic conditions, the Yb:KYW crystal has observed its market in superior-power laser applications due to its ability to generate superior Electrical power ultrashort laser pulses when retaining a compact measurement. The interaction of its capabilities �?seamless ytterbium substitution, powerful absorption traits, ultrashort pulse technology and effectiveness in energy conversion �?positions the Yb:KYW crystal to be a cornerstone while in the laser engineering, masking various fields starting from scientific study to industrial apps.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a impressive substance that plays an important position in laser technological innovation. Its Principal functionality would be to produce ultrashort pulses of light, spanning just some hundred femtoseconds.
time. Crystals in the compound melts congruently at 1007 oC, even so melt crystallization of high quality crystal is not possible as a consequence of period transition at ~920 oC. The best seeded Resolution technique from
Shade-coded reflectivity of the Bragg mirror to be a function of wavelength and angle in the incident beam.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers possessing fiber output. To forestall spectral narrowing throughout amplification along with the corresponding lengthening of your amplified pulse when it's compressed, a combination of two Yb:KYW crystals have been utilised, While using the spectral maxima of the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
The monoclinic crystal structures results in a normal birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization loss.
FIG. 1. Optical structure of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
five mm besides the middle with the beam caustic. In an effort to Verify the manner matching simulation, we carried out the experiment with Ng-Slash crystal oscillator, which was designed previously and in a exact problem with simulation [eleven]. As shown in Figure three(b) with pink dots and line, the CW output electricity is highly dependent on the situation of laser crystal and also the experimental outcome coincides very well with simulation result. Like a Observe, multimode Procedure happened in experiment when the size in the pump beam is more substantial than TEM00 cavity manner and it results in higher CW output energy within the displacement area underneath three.five mm.
... at fifty percent-height were being created in the master oscillator with selfsynchronization from the axial modes, explained within our before short article. 21 The new edition with the laser, contrary to that described within our previously article, utilized an Yb:KYW crystal with the N pcut (optical axis N p with the index ellipsoid was parallel on the propagation way on the laser radiation), Using the polarization with the generated radiation directed alongside the N m axis.
High-electricity repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical applications
The thermal conductivity of popular double tungstates is on the order to three–4 W/(K m) �?which isn't poor as opposed with other laser crystals (Despite the fact that a number of periods under for YAG), and rather massive in contrast While using the thermal conductivity of standard Eyeglasses.
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