KYW Crystal - An Overview
KYW Crystal - An Overview
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is quite significant in comparison with that of Yb:YAG. This enables for large wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values properly down below 100 fs happen to be reached with passive method locking.
The comparison with glasses is appropriate Considering that the substantial gain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in mild absorption at all over 981 nm makes the crystal like minded for diode pumping. It truly is further more Increased by its exceptional effectiveness in this process, coupled with its lower quantum defect.
Colour-coded reflectivity of the Bragg mirror as a operate of wavelength and angle of the incident beam.
Optical structure of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output in the radiation, WP is really a 50 percent-wave plate, CL is really a collimating lens, FL is usually a focusing lens, AE is really an Lively component comprised of an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC may be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a very important unusual-earth-doped laser attain medium. It was the truth is Employed in the primary consistently operating crystal laser.
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Spatial framework on the beam along with the corresponding depth profiles I on the output in the laser.
For tungstates, the ytterbium doping focus can be very significant with out major quenching as the changed ions have an extremely very similar ion radius, and also the inter-ion distance is comparatively massive.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW a result of the similar dimensions of those chemical factors up to a hundred% of Yb-doping may be accomplished.
The thermal conductivity of typical double tungstates is of your purchase to three–four W/(K m) �?which is not bad when compared with other laser crystals (Even though quite a few instances fewer than for YAG), and pretty large in contrast Using the thermal conductivity of standard Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is a remarkable material that performs a significant position in laser technological innovation. Its Major perform would be to generate ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Talk to RP Photonics for almost any guidance relating to tungstate lasers, such as femtosecond lasers and superior-electrical power lasers.