Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This permits for broad wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values perfectly below 100 fs have already been reached with passive method locking.
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time. Crystals of the compound melts congruently at 1007 oC, having said that melt crystallization of high quality crystal is impossible due to section changeover at ~920 oC. The best seeded Remedy approach from
Shade-coded reflectivity of a Bragg mirror as being a perform of wavelength and angle from the incident beam.
Optical structure of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output of the radiation, WP is actually a 50 percent-wave plate, CL is a collimating lens, FL is really a focusing lens, AE is undoubtedly an Energetic ingredient made from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC could be the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
Adhesion Test Compliant with MIL-C-675C army requirements, an adhesion check involved implementing a tape that fulfills LT-90 technical specs onto the lens movie layer. The tape was affixed entirely then eliminated vertically. This process was executed thrice, leading to no blistering or peeling.
FIG. one. Optical layout of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial construction from the beam and also the corresponding intensity profiles I within the output of your laser.
For tungstates, the ytterbium doping concentration can be KYW Crystal quite high with no significant quenching since the changed ions have a very related ion radius, as well as inter-ion distance is comparatively massive.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW because of the comparable dimensions of those chemical components up to a hundred% of Yb-doping may be accomplished.
The thermal conductivity of popular double tungstates is of your buy to 3–4 W/(K m) �?which isn't undesirable compared with other laser crystals (While numerous times below for YAG), and fairly massive as opposed Together with the thermal conductivity of usual glasses.
Li2WO4-WO3 flux was productively used lessening The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds into the P2/n space group.
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