KYW Crystal Secrets
KYW Crystal Secrets
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is very huge in comparison with that of Yb:YAG. This permits for wide wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values nicely under a hundred fs have been achieved with passive mode locking.
This exclusive attribute of ultrafast pulses permits nonlinear optical interaction with tissue at low All round publicity, and drives applications which include deep-tissue multiphoton microscopy and substantial-precision eye operation
time. Crystals of the compound melts congruently at 1007 oC, nevertheless soften crystallization of top of the range crystal is difficult resulting from stage transition at ~920 oC. The top seeded Resolution technique from
Coloration-coded reflectivity of the Bragg mirror as being a operate of wavelength and angle on the incident beam.
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers possessing fiber output. To prevent spectral narrowing during amplification and the corresponding lengthening of the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals have been utilized, Using the spectral maxima of the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Right before the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser acquire medium. It had been in fact used in the primary consistently operating crystal laser.
FIG. one. Optical layout of the laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
5 mm apart from the middle on the beam caustic. In an effort to Examine the mode matching simulation, we executed the experiment with Ng-Slice crystal oscillator, which was produced previously As well as in a identical problem with simulation [11]. As demonstrated in Figure three(b) with red dots and line, the CW output electric power is highly depending on the place of laser crystal as well as experimental end result coincides perfectly with simulation end result. To be a Be aware, multimode Procedure transpired in experiment in the event the sizing in the pump beam is much larger than TEM00 cavity method and it leads to greater CW output electric power during the displacement area under three.five mm.
For tungstates, the ytterbium doping focus can be very superior devoid of sizeable quenching as the changed ions have an exceedingly comparable ion radius, along with the inter-ion length is pretty large.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW due to the related sizes of those chemical elements nearly one hundred% of Yb-doping can be attained.
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