KYW Crystal - An Overview
KYW Crystal - An Overview
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The comparison with glasses is suitable For the reason that huge obtain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing inside a regenerative amplifier by spectral profiling of the heartbeat
The absorption and emission spectra of Yb:KYW Crystals Exhibit potent peaks at 980 nm and 1030 nm, respectively, making sure efficient energy conversion and higher efficiency in laser programs.
Optical format of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is usually a fifty percent-wave plate, CL is a collimating lens, FL can be a concentrating lens, AE is really an active element constructed from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC may be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a natural birefringence, helping to avoid thermally induced polarization rotation and depolarization decline.
Raman, luminescence and transmission spectra reveal optical capabilities owing into the existence of thulium ions, and therefore the products might be more researched inside the scope of laser and luminescence programs.
Spatial composition on the beam as well as corresponding depth profiles I within the output in the laser.
For tungstates, the ytterbium doping concentration can be very higher without having significant quenching because the changed ions have a very very similar ion radius, and the inter-ion distance is comparatively massive.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to related sizes of such chemical things around 100% of Yb-doping may very well be reached.
The thermal conductivity of frequent double tungstates is of the buy to three–4 W/(K m) �?which isn't negative as opposed with other laser crystals (Despite the fact that several moments less than for YAG), and reasonably large in contrast Together with the thermal conductivity of usual Eyeglasses.
Li2WO4-WO3 flux was efficiently used reducing the growth temperature under 900 oC. According to single crystal x-ray measurements, the crystal corresponds for the P2/n House team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at space temperature have been calculated. The emission read more spectrum and life span of the 3 F 4 fired up condition ended up decided. Applying standard and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes had been calculated and excellent arrangement With all the experimental final results was acquired for equally theories.
Simultaneously, a shorter laser wavelength may be attained; it is feasible to operate that has a quantum defect effectively below 1%. As a consequence, the warmth technology might be so small that this partly compensates the lower thermal conductivity.