An Unbiased View of KYW Crystal

An Unbiased View of KYW Crystal

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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly large in comparison with that of Yb:YAG. This permits for extensive wavelength tunability and for A lot shorter pulse durations from method-locked lasers. Values effectively down below 100 fs are accomplished with passive method locking.

This exceptional attribute of ultrafast pulses enables nonlinear optical conversation with tissue at lower All round publicity, and drives programs including deep-tissue multiphoton microscopy and large-precision eye operation

Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the pulse

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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 having fiber output. To circumvent spectral narrowing throughout amplification as well as the corresponding lengthening of the amplified pulse when it really is compressed, a combination of two Yb:KYW crystals were being made use of, While using the spectral maxima of your amplification shifted relative to one another and with spectral profiling of your amplified radiation.

Immediately after air drying and subsequent cleansing which has a cotton fabric soaked in Liquor, the film floor confirmed no indications of peeling or scratches.

FIG. one. Optical structure of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output

Tungstates tend to have superior Raman coefficients (�?Raman scattering). For that reason, they could create substantial Raman get at moderate optical intensities. It is feasible to make use of the laser crystal itself being a Raman converter.

For tungstates, the ytterbium doping concentration can be quite superior without substantial quenching because the changed ions have an extremely identical ion radius, along with the inter-ion distance is pretty huge.

By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW as a result of comparable sizes of those chemical components up to one hundred% of Yb-doping may be accomplished.

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At the same time, a shorter laser wavelength is often received; it can be done to operate which has a quantum defect perfectly beneath 1%. As a consequence, the heat era could be so small this partly compensates the lessen thermal conductivity.