New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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We present a dual-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output electric power up to 24 W and pulse length of twenty ns,or as a regenerative amplifier with output energy up to 21 W and pulse duration below two hundred fs just after compression of chirped pulses. Each lasers have superb beam quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing in the course of amplification as well as the corresponding lengthening from the amplified pulse when it is actually compressed, a combination of two Yb:KYW crystals were made use of, With all the spectral maxima from the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Just after air drying and subsequent cleaning which has a cotton cloth soaked in Alcoholic beverages, the film floor showed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are employed as lasing supplies to generate ultrashort (~ a hundred-200 fs) significant electrical power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
A superior brightnessQ-switched oscillator and regenerative amplifier dependant on a twin-crystal Yb:KGW laser
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Nevertheless, the moment Nd3+:YAG became commercially obtainable, the desire in CaWO4 dropped sharply. In later a long time, sure other tungstate crystals began to catch the attention of lots of focus.
Whilst ytterbium-doped laser obtain media commonly exhibit a small quantum defect, ytterbium-doped tungstates allow for especially little values. For instance, a 1030-nm Yb:YAG laser would Typically be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most successfully pumped all around 981 nm.
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Simultaneously, a shorter laser wavelength could be obtained; it is achievable to operate which has a quantum defect properly below one%. As a consequence, the warmth generation is usually so tiny this partly compensates the reduced thermal conductivity.