Detailed Notes on KYW Crystal
Detailed Notes on KYW Crystal
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In realistic phrases, the Yb:KYW crystal has identified its market in higher-energy laser applications as a consequence of its ability to deliver superior energy ultrashort laser pulses though sustaining a compact dimension. The interaction of its characteristics �?seamless ytterbium substitution, robust absorption characteristics, ultrashort pulse era and efficiency in Electrical power conversion �?positions the Yb:KYW crystal being a cornerstone in the laser technological know-how, covering assorted fields ranging from scientific investigate to industrial programs.
The comparison with glasses is acceptable since the large obtain bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
time. Crystals of your compound melts congruently at 1007 oC, nevertheless melt crystallization of top quality crystal is difficult because of stage transition at ~920 oC. The highest seeded Resolution system from
FIG. four. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with an oblong Energetic aspect for an output electrical power of 700 mW. The width of
Optical structure of a laser with direct pumping With all the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output of your radiation, WP is a fifty percent-wave plate, CL is often a collimating lens, FL is often a focusing lens, AE is definitely an Lively factor created from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC will be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
Adhesion Examination Compliant with MIL-C-675C navy specifications, an adhesion test included implementing a tape that satisfies LT-90 specifications onto the lens film layer. The tape was affixed totally after which taken off vertically. This course of action was performed 3 times, causing no blistering or peeling.
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Tungstates have a tendency to get significant Raman coefficients (�?Raman scattering). Therefore, they will create important Raman get at average optical intensities. It is achievable to utilize the laser crystal by itself being a Raman converter.
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Nevertheless, at the time Nd3+:YAG grew to become commercially offered, the curiosity in CaWO4 dropped sharply. In later on decades, certain other tungstate crystals started to catch the attention of lots of focus.
Whilst ytterbium-doped laser attain media typically show a small quantum defect, ytterbium-doped tungstates let for particularly modest values. For example, a 1030-nm Yb:YAG laser would Typically be pumped all-around 940 nm, whereas Yb:KGW or Yb:KYW may be most competently pumped close to 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at space temperature were calculated. The emission spectrum and life span of the three File 4 enthusiastic condition were established. Using regular and modified Judd–Ofelt theories, the intensity parameters and the radiative lifetimes were being calculated and superior agreement here While using the experimental effects was obtained for both of those theories.
Talk to RP Photonics for just about any information concerning tungstate lasers, which includes femtosecond lasers and higher-electricity lasers.