KYW Crystal Options
KYW Crystal Options
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is extremely huge in comparison with that of Yb:YAG. This enables for vast wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values well below a hundred fs are actually accomplished with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is really a exceptional product that performs an essential job in laser technological know-how. Its Most important function should be to make ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in gentle absorption at all around 981 nm would make the crystal like minded for diode pumping. It truly is further more Increased by its impressive efficiency in this method, coupled with its small quantum defect.
Shade-coded reflectivity of the Bragg mirror as a perform of wavelength and angle on the incident beam.
Optical layout of a laser with direct pumping Using the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output from the radiation, WP is actually a half-wave plate, CL is actually a collimating lens, FL can be a concentrating lens, AE is really an active aspect comprised of an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC could be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C armed forces benchmarks, an adhesion test concerned making use of a tape that fulfills LT-ninety technical specs on to the lens movie layer. The tape was affixed fully after which click here taken out vertically. This technique was executed thrice, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical functions owing towards the existence of thulium ions, and so the supplies can be even further researched during the scope of laser and luminescence apps.
Tungstates are likely to have higher Raman coefficients (�?Raman scattering). For that reason, they will deliver significant Raman acquire at moderate optical intensities. It is feasible to make use of the laser crystal by itself being a Raman converter.
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Nevertheless, when Nd3+:YAG grew to become commercially readily available, the desire in CaWO4 dropped sharply. In afterwards decades, certain other tungstate crystals started to entice plenty of focus.
While ytterbium-doped laser achieve media generally show a little quantum defect, ytterbium-doped tungstates enable for particularly modest values. For example, a 1030-nm Yb:YAG laser would Generally be pumped around 940 nm, whereas Yb:KGW or Yb:KYW may very well be most effectively pumped all-around 981 nm.
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