An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is extremely massive as opposed with that of Yb:YAG. This allows for vast wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values well beneath 100 fs are already reached with passive manner locking.
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time. Crystals in the compound melts congruently at 1007 oC, nonetheless melt crystallization of top of the range crystal is extremely hard as a result of phase changeover at ~920 oC. The top seeded Option technique from
The absorption and emission spectra of Yb:KYW Crystals Screen solid peaks at 980 nm and 1030 nm, respectively, making sure economical energy conversion and higher efficiency in laser techniques.
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 from the radiation, WP is usually a fifty percent-wave plate, CL is a collimating lens, FL can be a concentrating lens, AE is surely an Lively component made out of an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC is the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C armed forces criteria, an adhesion exam associated applying a tape that satisfies LT-ninety technical specs onto the lens movie layer. The tape was affixed thoroughly then taken off vertically. This procedure was done three times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical attributes owing for the presence of thulium ions, and so the products might be more researched while in the scope of laser and luminescence apps.
Spatial framework on the beam along with the corresponding intensity profiles I check here in the output from the laser.
For tungstates, the ytterbium doping concentration can be extremely high with no significant quenching because the replaced ions have an exceedingly related ion radius, and the inter-ion distance is comparatively substantial.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW as a result of comparable sizes of such chemical aspects around a hundred% of Yb-doping may very well be attained.
When ytterbium-doped laser gain media usually exhibit a little quantum defect, ytterbium-doped tungstates allow for for particularly small values. For instance, a 1030-nm Yb:YAG laser would Usually be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most successfully pumped all around 981 nm.
Li2WO4-WO3 flux was properly used decreasing the growth temperature under 900 oC. In keeping with single crystal x-ray measurements, the crystal corresponds towards the P2/n Room team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at room temperature have been calculated. The emission spectrum and life span of your three F four thrilled state have been decided. Working with conventional and modified Judd–Ofelt theories, the depth parameters and the radiative lifetimes were calculated and great agreement Using the experimental outcomes was obtained for both theories.
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