Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly substantial as opposed with that of Yb:YAG. This permits for large wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values well below one hundred fs are realized with passive method locking.
The comparison with glasses is appropriate Because the substantial attain bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals from the compound melts congruently at 1007 oC, having said that soften crystallization of high quality crystal is unattainable as a result of section changeover at ~920 oC. The very best seeded Option method from
FIG. 4. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong active component for an output ability of seven hundred mW. The width of
Ultrafast lasers, with pulse widths of some picoseconds (10−twelve s) or fewer, allow the time resolution necessary in laser-energized fluorescence lifetime spectroscopy and imaging procedures.Also, they provide substantial pulse peak powers at superior repetition rates and average typical output powers.
Adhesion Test Compliant with MIL-C-675C armed service requirements, an adhesion take a look at associated applying a tape that satisfies LT-ninety technical specs onto the lens film layer. The tape was affixed absolutely and after that taken off vertically. This method was done 3 times, resulting in no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and so are made use of as lasing materials to crank out ultrashort (~ 100-two hundred fs) higher electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm click here supports compact laser programs.
A high brightnessQ-switched oscillator and regenerative amplifier based upon a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can be extremely large with out substantial quenching since the replaced ions have an extremely very similar ion radius, and the inter-ion length is fairly huge.
... Not simply the position of crystal during the cavity but also the amplification axis of crystal impacts the laser operation considerably, as the absorption and emission cross sections on the crystal are rather diverse according to the orientation in the crystal.
The thermal conductivity of prevalent double tungstates is on the purchase to three–4 W/(K m) �?which isn't negative compared with other laser crystals (While various moments lower than for YAG), and quite huge compared Using the thermal conductivity of usual Eyeglasses.
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