New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is extremely big as opposed with that of Yb:YAG. This enables for broad wavelength tunability and for much shorter pulse durations from method-locked lasers. Values nicely below a hundred fs are already accomplished with passive method locking.
The comparison with Eyeglasses is appropriate Because the big attain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals in the compound melts congruently at 1007 oC, having said that soften crystallization of high quality crystal is difficult resulting from stage changeover at ~920 oC. The very best seeded Remedy process from
Colour-coded reflectivity of the Bragg mirror for a perform of wavelength and angle of the incident beam.
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with immediate longitudinal pumping by effective linear arrays of semiconductor injection lasers obtaining fiber output. To forestall spectral narrowing all through amplification plus the corresponding lengthening with the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals had been used, with the spectral maxima of your amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Prior to the event of Nd:YAG, Nd3+:CaWO4 was a vital unusual-earth-doped laser gain medium. It absolutely was the truth is Employed in the very first continually functioning crystal laser.
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Spatial structure from the beam along with the corresponding depth profiles I within the output in the laser.
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However, the moment Nd3+:YAG became commercially readily available, the interest in CaWO4 dropped sharply. In later on decades, specific other tungstate crystals began to attract a great deal of attention.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is often a exceptional content that performs a vital role in laser technology. Its Key purpose will be to crank out ultrashort pulses of light, spanning only a few hundred femtoseconds.
Simultaneously, a shorter laser wavelength may be attained; it is achievable to function with a quantum defect very well under 1%. Being a consequence, the heat era might be so smaller that this partly compensates the decreased thermal conductivity.