Top KYW Crystal Secrets
Top KYW Crystal Secrets
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This exceptional characteristic of ultrafast pulses allows nonlinear optical conversation with tissue at minimal Over-all publicity, and drives programs for instance deep-tissue multiphoton microscopy and significant-precision eye surgical procedures
time. Crystals of your compound melts congruently at 1007 oC, even so melt crystallization of top of the range crystal is impossible resulting from period transition at ~920 oC. The very best seeded Answer process from
Shade-coded reflectivity of a Bragg mirror for a operate of wavelength and angle of the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers acquiring fiber output. To stop spectral narrowing for the duration of amplification as well as corresponding lengthening from the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals ended up utilized, Along with the spectral maxima of the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
The monoclinic crystal constructions results in a purely natural birefringence, assisting to stay away from thermally induced polarization rotation and depolarization reduction.
Raman, luminescence and transmission spectra reveal optical options owing for the presence of thulium ions, and for that reason the materials may be even further researched from the scope of laser and luminescence purposes.
Spatial construction with the beam and also the corresponding intensity profiles I for the output with the laser.
... at 50 percent-top were produced in a very master oscillator with selfsynchronization in the axial modes, explained in our previously posting. 21 The new version in the laser, contrary to that described in our before post, made use of an Yb:KYW crystal with an N pcut (optical axis N p with the index ellipsoid was parallel towards the propagation path of the laser radiation), with the polarization of the generated radiation directed alongside the N m axis.
... Not simply the place of crystal from the cavity but additionally the amplification axis of crystal has an effect on the laser operation drastically, because the absorption and emission cross sections on the crystal are fairly distinctive according to the orientation in the crystal.
The thermal conductivity of frequent double here tungstates is with the buy to three–4 W/(K m) �?which is not negative in comparison with other laser crystals (Even though several instances below for YAG), and reasonably massive in contrast With all the thermal conductivity of common Eyeglasses.
Li2WO4-WO3 flux was productively used lessening The expansion temperature beneath 900 oC. Based on one crystal x-ray measurements, the crystal corresponds on the P2/n space team.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, is usually a outstanding materials that performs a very important role in laser technological innovation. Its Principal perform is usually to create ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
At the same time, a shorter laser wavelength might be acquired; it is possible to work with a quantum defect perfectly beneath 1%. For a consequence, the warmth generation might be so little this partly compensates the decreased thermal conductivity.