KYW Crystal - An Overview
KYW Crystal - An Overview
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This special attribute of ultrafast pulses enables nonlinear optical conversation with tissue at reduced All round exposure, and drives purposes including deep-tissue multiphoton microscopy and higher-precision eye surgical procedures
time. Crystals of the compound melts congruently at 1007 oC, even so soften crystallization of top quality crystal is extremely hard resulting from phase transition at ~920 oC. The very best seeded solution method from
Shade-coded reflectivity of the Bragg mirror to be a operate of wavelength and angle with the incident beam.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals were made use of, Along with the spectral maxima from 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 a vital uncommon-earth-doped laser obtain medium. It had been in fact used in the primary consistently operating crystal laser.
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Tungstates tend to possess large Raman coefficients (�?Raman scattering). For that reason, they might generate substantial Raman acquire at moderate optical intensities. It is possible to utilize the laser crystal alone being a Raman converter.
For tungstates, the ytterbium doping concentration can be extremely higher devoid of substantial quenching since the changed ions have an exceedingly comparable ion radius, as well as inter-ion length is relatively huge.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW as a result of comparable sizes of those chemical components as much as 100% of Yb-doping may very well be realized.
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Li2WO4-WO3 flux was properly used decreasing the growth temperature underneath 900 oC. According to single crystal x-ray measurements, the crystal corresponds towards the P2/n Place team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were being measured. The emission spectrum and lifetime in the 3 F 4 enthusiastic point out were being identified. Using regular and modified Judd–Ofelt theories, the intensity parameters as well as the radiative lifetimes have been calculated and very good arrangement Together with the experimental benefits was acquired for the two theories.
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