The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly big in comparison with that of Yb:YAG. This permits for wide wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values well below a hundred fs happen to be accomplished with passive manner locking.

The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is a outstanding substance that performs a significant purpose in laser technological know-how. Its Most important operate is always to produce ultrashort pulses of light, spanning just a couple hundred femtoseconds.

The Yb:KYW crystal’s proficiency in light-weight absorption at all around 981 nm helps make the crystal well suited for diode pumping. It can be further more enhanced by its remarkable efficiency in this process, coupled with its low quantum defect.

Colour-coded reflectivity of the Bragg mirror to be a operate of wavelength and angle in the incident beam.

Optical structure of a laser with direct pumping Using the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output from the radiation, WP can be a 50 percent-wave plate, CL can be a collimating lens, FL is often a concentrating lens, AE is an Energetic aspect constructed from an Yb:KYW crystal, DM can be a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC would be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.

The monoclinic crystal structures leads to a normal birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization decline.

FIG. one. Optical layout of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output

Tungstates tend to have large Raman coefficients (�?Raman scattering). Therefore, they could make sizeable Raman achieve at moderate optical intensities. It is possible to use the laser crystal alone as being a Raman converter.

For tungstates, the ytterbium doping concentration can be very higher without sizeable quenching as the replaced ions have an extremely very similar ion radius, along with the inter-ion length is pretty huge.

High-electricity repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical apps

Though ytterbium-doped laser attain media generally show a small quantum defect, ytterbium-doped tungstates make it possible for for notably modest values. For instance, a 1030-nm Yb:YAG laser would Commonly be pumped all over 940 nm, Whilst Yb:KGW or Yb:KYW can be most successfully pumped all-around 981 nm.

This tandem of attributes has considerably-reaching implications, specially in the construction of compact yet powerfull lasers.

The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal check here at place temperature were measured. The emission spectrum and life time of your 3 F 4 energized point out were determined. Employing conventional and modified Judd–Ofelt theories, the intensity parameters and the radiative lifetimes were calculated and excellent arrangement Together with the experimental effects was received for both of those theories.

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