KYW Crystal Secrets
KYW Crystal Secrets
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This exclusive characteristic of ultrafast pulses allows nonlinear optical interaction with tissue at small All round exposure, and drives purposes for instance deep-tissue multiphoton microscopy and substantial-precision eye operation
time. Crystals of the compound melts congruently at 1007 oC, nonetheless melt crystallization of top quality crystal is unattainable resulting from stage transition at ~920 oC. The highest seeded solution strategy from
FIG. four. Autocorrelation function of the pulse 共a兲and spectrum 共b兲of a laser with a rectangular Energetic aspect for an output ability of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing through amplification along with the corresponding lengthening in the amplified pulse when it is actually compressed, a combination of two Yb:KYW crystals were made use of, Along with the spectral maxima in the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
Following air drying and subsequent cleansing having a cotton fabric soaked in alcohol, the film floor confirmed no signs of peeling or scratches.
FIG. one. Optical layout of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Tungstates tend to possess higher Raman coefficients (�?Raman scattering). As a result, they could make important Raman achieve at moderate optical intensities. It can be done to utilize the laser crystal by itself like a Raman converter.
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... Not only the placement of crystal from the cavity but also the amplification axis of crystal affects the laser Procedure significantly, because the absorption and emission cross sections from the crystal are really diverse based on the orientation in the crystal.
The thermal conductivity of common double tungstates is of your buy to three–4 W/(K m) �?which is not lousy when compared with other laser crystals (Though several instances fewer than for YAG), and reasonably large when compared Using the thermal conductivity of regular glasses.
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