The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is quite huge in comparison with that of Yb:YAG. This enables for extensive wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values nicely down below 100 fs have been achieved with passive manner locking.

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We current a twin-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output electric power as many as 24 W and pulse length of twenty ns,or being a regenerative amplifier with output electricity approximately 21 W and pulse length under 200 fs right after compression of chirped pulses. The two lasers have outstanding beam quality with beam parameter M2

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This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing in the course of amplification and the corresponding lengthening in the amplified pulse when it's compressed, a combination of two Yb:KYW crystals were being utilized, Using the spectral maxima on the amplification shifted relative to each other and check here with spectral profiling on the amplified radiation.

Prior to the development of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser attain medium. It was the truth is Employed in the very first repeatedly functioning crystal laser.

Raman, luminescence and transmission spectra reveal optical options owing on the presence of thulium ions, and as a consequence the resources might be further more analyzed within the scope of laser and luminescence apps.

Tungstates are likely to have higher Raman coefficients (�?Raman scattering). Therefore, they could deliver sizeable Raman gain at moderate optical intensities. It is possible to use the laser crystal itself as a Raman converter.

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... Don't just the placement of crystal while in the cavity but in addition the amplification axis of crystal impacts the laser Procedure significantly, since the absorption and emission cross sections of your crystal are very various in accordance with the orientation in the crystal.

The thermal conductivity of widespread double tungstates is with the get to 3–4 W/(K m) �?which is not terrible compared with other laser crystals (Whilst various occasions lower than for YAG), and fairly large compared Using the thermal conductivity of normal glasses.

This tandem of characteristics has far-reaching implications, specifically in the construction of compact nonetheless powerfull lasers.

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Concurrently, a shorter laser wavelength is usually received; it is achievable to work that has a quantum defect well under 1%. Being a consequence, the warmth generation is often so tiny this partly compensates the reduce thermal conductivity.