The smart Trick of KYW Crystal That Nobody is Discussing
The smart Trick of KYW Crystal That Nobody is Discussing
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, can be a extraordinary substance that plays a vital job in laser engineering. Its Principal functionality is to make ultrashort pulses of light, spanning just a few hundred femtoseconds.
time. Crystals of the compound melts congruently at 1007 oC, having said that melt crystallization of high quality crystal is unachievable as a result of phase changeover at ~920 oC. The top seeded Option approach from
The absorption and emission spectra of Yb:KYW Crystals Exhibit potent peaks at 980 nm and 1030 nm, respectively, making certain productive Electrical power conversion and higher functionality in laser devices.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing for the duration of amplification and also the corresponding lengthening of your amplified pulse when it really is compressed, a mix of two Yb:KYW crystals were being utilised, with the spectral maxima with the amplification shifted relative to each other and with spectral profiling of your amplified radiation.
Soon after air drying and subsequent cleansing with a cotton fabric soaked in Liquor, the movie surface confirmed no signs of peeling or scratches.
FIG. one. Optical format of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
Tungstates are inclined to own large Raman coefficients (�?Raman scattering). Therefore, they will crank out significant Raman get at moderate optical intensities. It is feasible to utilize the laser crystal itself for a Raman converter.
For tungstates, the ytterbium doping concentration can be quite significant with no significant quenching because the changed ions have an extremely identical ion radius, plus the inter-ion distance is relatively significant.
... Not merely the placement of crystal while in the cavity but also the amplification axis of crystal impacts the laser Procedure considerably, since the absorption and emission cross sections in the crystal are pretty various based on the orientation in the crystal.
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