New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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time. Crystals in the compound melts congruently at 1007 oC, nonetheless melt crystallization of top quality crystal is unattainable resulting from period transition at ~920 oC. The highest seeded Answer approach from
Colour-coded reflectivity of the Bragg mirror as a perform of wavelength and angle on the incident beam.
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers owning fiber output. To circumvent spectral narrowing through amplification along with the corresponding lengthening in the amplified pulse when it's compressed, a combination of two Yb:KYW crystals were used, With all the spectral maxima on the amplification shifted relative to one another and with spectral profiling of your amplified radiation.
Following air drying and subsequent cleansing by using a cotton cloth soaked in Alcoholic beverages, the film area confirmed no indications of peeling or scratches.
FIG. one. Optical structure of the laser with direct more info pumping Using the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
Tungstates are likely to acquire significant Raman coefficients (�?Raman scattering). Thus, they will deliver sizeable Raman achieve at moderate optical intensities. It is possible to utilize the laser crystal itself for a Raman converter.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the comparable dimensions of those chemical components up to a hundred% of Yb-doping could possibly be realized.
The thermal conductivity of prevalent double tungstates is in the purchase to three–4 W/(K m) �?which is not bad when compared with other laser crystals (Even though quite a few instances fewer than for YAG), and relatively substantial compared Together with the thermal conductivity of typical glasses.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at space temperature ended up calculated. The emission spectrum and lifetime in the 3 F 4 fired up point out had been decided. Applying conventional and modified Judd–Ofelt theories, the depth parameters as well as radiative lifetimes were being calculated and good arrangement While using the experimental effects was acquired for equally theories.
Concurrently, a shorter laser wavelength can be attained; it is possible to work by using a quantum defect nicely down below 1%. For a consequence, the warmth era is often so smaller that this partly compensates the decrease thermal conductivity.