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The comparison with glasses is suitable since the substantial acquire bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.

Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the heartbeat

Coloration-coded reflectivity of a Bragg mirror to be a operate of wavelength and angle of your incident beam.

This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers obtaining fiber output. To circumvent spectral narrowing during amplification and also the corresponding lengthening in the amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals have been applied, While using the spectral maxima of your amplification shifted relative to one another and with spectral profiling in the amplified radiation.

Soon after air drying and subsequent cleaning having a cotton fabric soaked in Liquor, the film area showed no signs of peeling or scratches.

FIG. 1. Optical format of the laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output

Tungstates have a tendency to obtain significant Raman coefficients (�?Raman scattering). For that reason, they will deliver substantial Raman gain at average optical intensities. It is possible to utilize the laser crystal by itself being a Raman converter.

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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to the related measurements of such chemical components nearly one hundred% of Yb-doping may very well be attained.

Whilst ytterbium-doped laser obtain media commonly exhibit a little quantum defect, ytterbium-doped tungstates enable for significantly compact values. Such as, a 1030-nm Yb:YAG laser would Commonly be pumped all around 940 nm, Whilst Yb:KGW or Yb:KYW could be most efficiently pumped all around 981 nm.

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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature were being calculated. The emission spectrum and life span of your three File 4 excited point out have been identified. Applying typical and modified Judd–Ofelt theories, the intensity parameters as well as the radiative lifetimes were being calculated and good agreement Along with the experimental outcomes was received for both of those theories.

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