The smart Trick of KYW Crystal That Nobody is Discussing
The smart Trick of KYW Crystal That Nobody is Discussing
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is very huge compared with that of Yb:YAG. This allows for broad wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values nicely under one hundred fs are actually achieved with passive manner locking.
This one of a kind attribute of ultrafast pulses allows nonlinear optical interaction with tissue at minimal overall exposure, and drives purposes such as deep-tissue multiphoton microscopy and substantial-precision eye surgery
Femtosecond laser depending on Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the heart beat
The absorption and emission spectra of Yb:KYW Crystals Show sturdy peaks at 980 nm and 1030 nm, respectively, making sure effective Strength conversion and superior efficiency in laser devices.
Optical layout of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output in the radiation, WP is usually a 50 %-wave plate, CL is usually a collimating lens, FL is often a focusing lens, AE is definitely an Lively aspect created from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC may be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
Adhesion Test Compliant with MIL-C-675C armed service requirements, an adhesion take a look at included implementing a tape that meets LT-90 requirements on to the lens film layer. The tape was affixed entirely after which you can removed vertically. This method was done 3 times, leading to no blistering or peeling.
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Spatial framework from the beam as well as the corresponding depth profiles I within the output of the laser.
For tungstates, the ytterbium doping concentration can be very superior with out considerable quenching as the changed ions have an extremely comparable ion radius, plus the inter-ion length is pretty massive.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW a result of the identical measurements of those chemical components around one hundred% of Yb-doping may very well be reached.
Though ytterbium-doped laser gain media frequently show a little quantum defect, ytterbium-doped tungstates allow for for particularly modest values. By way of example, a 1030-nm Yb:YAG laser would Usually be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW can be most proficiently pumped all-around 981 nm.
Li2WO4-WO3 flux was effectively used decreasing The expansion temperature down below 900 oC. In line with single crystal x-ray measurements, the crystal corresponds to your P2/n House group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared to its counterpart Yb:KGW, can be a outstanding material that plays a vital job in laser technological know-how. Its Most important functionality is usually to produce ultrashort pulses of light, spanning just a few hundred femtoseconds.
Simultaneously, a shorter laser wavelength is often attained; it is possible to operate using a quantum defect very well down below 1%. As being a consequence, the heat era might be so small this partly compensates the lower thermal conductivity.