New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, can be a extraordinary product that performs an important function in laser engineering. Its Major functionality would be to crank out ultrashort pulses of light, spanning only a few hundred femtoseconds.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the heartbeat
The absorption and emission spectra of Yb:KYW Crystals Exhibit robust peaks at 980 nm and 1030 nm, respectively, ensuring productive Electricity conversion and substantial functionality in laser techniques.
Optical format of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output in the radiation, WP is usually a half-wave plate, CL is actually a collimating lens, FL is often a concentrating lens, AE is an active component constructed from an Yb:KYW crystal, DM can be a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC is the output mirror, and SAM is a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C military specifications, an adhesion take a look at associated implementing a tape that satisfies LT-ninety specifications onto the lens film layer. The tape was affixed totally after which taken out vertically. This treatment was done 3 times, resulting in no blistering or peeling.
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Spatial structure of the beam and the corresponding depth profiles I with the output from the laser.
For tungstates, the ytterbium doping concentration can be quite superior with no significant quenching because the replaced ions have an exceedingly equivalent ion radius, plus the inter-ion length is relatively huge.
However, at the time Nd3+:YAG turned commercially accessible, the interest in CaWO4 dropped sharply. In later several years, particular other tungstate crystals started to appeal to a lot of notice.
Though ytterbium-doped laser gain media usually exhibit a small quantum defect, ytterbium-doped tungstates allow for especially little values. As an example, a 1030-nm Yb:YAG laser would Typically be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW can be most competently pumped all-around 981 nm.
This tandem of characteristics has considerably-reaching implications, significantly read more in the construction of compact nevertheless powerfull lasers.
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