5 Simple Statements About KYW Crystal Explained
5 Simple Statements About KYW Crystal Explained
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is rather large compared with that of Yb:YAG. This enables for extensive wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values very well below one hundred fs have already been achieved with passive mode locking.
The comparison with glasses is acceptable Considering that the substantial achieve bandwidth permits e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in light-weight absorption at about 981 nm will make the crystal well suited for diode pumping. It really is even further Improved by its extraordinary efficiency in this process, coupled with its minimal quantum defect.
Coloration-coded reflectivity of a Bragg mirror as being a function of wavelength and angle on the incident beam.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW mainly because of the identical measurements of those chemical features as many as 100% of Yb-doping may very well be accomplished. This exclusive attribute permits ytterbium to go ahead and take position of yttrium with virtually no disruption to the crystal’s lattice.
Prior to the event of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser gain medium. It had been in actual fact used in the very first repeatedly operating crystal laser.
FIG. 1. Optical structure of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
A superior brightnessQ-switched oscillator and regenerative amplifier based upon a dual-crystal Yb:KGW laser
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Even so, the moment Nd3+:YAG turned commercially available, the interest in CaWO4 dropped sharply. In later years, particular other tungstate crystals started to attract lots of consideration.
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This tandem of characteristics has significantly-achieving implications, especially in the construction of compact nevertheless powerfull lasers.
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