The KYW Crystal Diaries
The KYW Crystal Diaries
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In useful phrases, the Yb:KYW crystal has located its niche in substantial-electric power laser applications on account of its capability to create substantial Strength ultrashort laser pulses though retaining a compact dimension. The interplay of its attributes �?seamless ytterbium substitution, strong absorption characteristics, ultrashort pulse era and efficiency in Vitality conversion �?positions the Yb:KYW crystal like a cornerstone during the laser technologies, masking assorted fields starting from scientific analysis to industrial apps.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is usually a outstanding product that plays an essential function in laser engineering. Its Most important purpose should be to create ultrashort pulses of light, spanning only a few hundred femtoseconds.
time. Crystals of the compound melts congruently at 1007 oC, even so melt crystallization of top of the range crystal is unachievable as a consequence of stage changeover at ~920 oC. The very best seeded Remedy method from
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This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers getting fiber output. To circumvent spectral narrowing during amplification as well as corresponding lengthening in the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals had been employed, While using the spectral maxima on the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Before the development of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser acquire medium. It had been actually used in the 1st constantly running crystal laser.
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A large brightnessQ-switched oscillator and regenerative amplifier according to a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can be quite large without having significant quenching as the changed ions have a very very similar ion radius, plus the inter-ion length is relatively big.
... Not just the situation of crystal within the cavity but will also the amplification axis of crystal impacts the laser Procedure considerably, because the absorption and emission cross sections from the crystal are pretty diverse based on the orientation of your crystal.
The thermal conductivity of popular double tungstates is of your purchase to 3–four W/(K m) �?which isn't negative website in contrast with other laser crystals (Though quite a few situations under for YAG), and reasonably big compared Using the thermal conductivity of normal Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, can be a extraordinary material that performs a crucial position in laser know-how. Its Principal purpose is usually to make ultrashort pulses of light, spanning just some hundred femtoseconds.
Concurrently, a shorter laser wavelength is often received; it can be done to work which has a quantum defect perfectly underneath 1%. Like a consequence, the heat technology might be so tiny that this partly compensates the decreased thermal conductivity.