The gain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly significant in contrast with that of Yb:YAG. This enables for extensive wavelength tunability and for A lot shorter pulse durations from method-locked lasers. Values very well below 100 fs happen to be attained with passive method locking.

This exclusive characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at small Over-all exposure, and drives programs like deep-tissue multiphoton microscopy and high-precision eye surgical procedures

We existing a twin-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output ability approximately 24 W and pulse size of 20 ns,or for a regenerative amplifier with output electric power as many as 21 W and pulse length under 200 fs following compression of chirped pulses. Both lasers have fantastic beam high-quality with beam parameter M2

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This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by impressive linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing for the duration of amplification as well as the corresponding lengthening from the amplified pulse when it is compressed, a mix of two Yb:KYW crystals were made use of, Together with the spectral maxima from the amplification shifted relative to one another and with spectral profiling in the amplified radiation.

Right before the development of Nd:YAG, Nd3+:CaWO4 was an important exceptional-earth-doped laser gain medium. It had been in truth used in the 1st continuously working crystal laser.

FIG. 1. Optical layout of a laser with direct pumping With all the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output

Tungstates have a tendency to get significant Raman coefficients (�?Raman scattering). Hence, they can deliver substantial Raman acquire at moderate optical intensities. It is possible to utilize the laser crystal alone for a Raman converter.

For tungstates, the ytterbium doping focus can be very substantial without considerable quenching as the changed ions have a really related ion radius, as well as inter-ion distance is relatively huge.

By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the equivalent sizes of such chemical factors up to a hundred% of Yb-doping may be accomplished.

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Li2WO4-WO3 flux was efficiently utilized lessening the growth temperature beneath 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n House team.

Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, can be a impressive content that plays an important role in laser technological know-how. Its Most important purpose is always to generate ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.

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