New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The comparison with Eyeglasses is suitable Because the big gain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals with the compound melts congruently at 1007 oC, however melt crystallization of top quality crystal is unachievable resulting from stage transition at ~920 oC. The very best seeded solution process from
Color-coded reflectivity of a Bragg mirror being a purpose of wavelength and angle on the incident beam.
Optical layout of the laser with direct pumping with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output on the radiation, WP is really a 50 %-wave plate, CL can be a collimating lens, FL is really a concentrating lens, AE is definitely an Energetic ingredient made out of an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC will be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a all-natural birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization decline.
Raman, luminescence and transmission spectra expose optical features owing towards the presence of thulium ions, and so the products could possibly be even more analyzed while in the scope of laser and luminescence purposes.
Spatial framework in the beam along with the corresponding intensity profiles I in the output from the laser.
For tungstates, the ytterbium doping focus can be extremely superior without the need of sizeable quenching as the replaced ions have an incredibly identical ion radius, and the inter-ion distance is fairly big.
By substituting yttrium with ytterbium read more from the crystal lattice of Yb:KYW due to the similar dimensions of those chemical elements nearly one hundred% of Yb-doping could possibly be achieved.
The thermal conductivity of popular double tungstates is on the order to three–4 W/(K m) �?which is not lousy in comparison with other laser crystals (Even though various occasions fewer than for YAG), and relatively significant in contrast Along with the thermal conductivity of common glasses.
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Concurrently, a shorter laser wavelength is often acquired; it is possible to work using a quantum defect nicely down below 1%. To be a consequence, the heat technology could be so small that this partly compensates the lessen thermal conductivity.