An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The get bandwidth e.g. of Yb:KGW and Yb:KYW may be very huge in contrast with that of Yb:YAG. This allows for wide wavelength tunability and for Significantly shorter pulse durations from mode-locked lasers. Values nicely below a hundred fs have been obtained with passive manner locking.
The comparison with glasses is acceptable since the big gain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser based upon Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the heartbeat
Coloration-coded reflectivity of the Bragg mirror as a operate of wavelength and angle with the incident beam.
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with immediate longitudinal pumping by powerful linear arrays of semiconductor injection lasers having fiber output. To circumvent spectral narrowing during amplification plus the corresponding lengthening of the amplified pulse when it really is compressed, a combination of two Yb:KYW crystals ended up applied, With all the spectral maxima on the amplification shifted relative to each other and with spectral profiling of your amplified radiation.
Just after air drying and subsequent cleaning with a cotton cloth soaked in Alcoholic beverages, the movie floor showed no signs of peeling or scratches.
Raman, luminescence and transmission spectra reveal optical functions owing into the read more presence of thulium ions, and so the components may very well be more analyzed while in the scope of laser and luminescence applications.
Tungstates tend to have higher Raman coefficients (�?Raman scattering). Therefore, they are able to deliver important Raman attain at reasonable optical intensities. It can be done to make use of the laser crystal alone as a Raman converter.
... at 50 %-top were created in a very master oscillator with selfsynchronization in the axial modes, explained within our previously report. 21 The new version of your laser, not like that explained inside our previously post, applied an Yb:KYW crystal with an N pcut (optical axis N p of your index ellipsoid was parallel for the propagation course with the laser radiation), Together with the polarization of your generated radiation directed along the N m axis.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW as a result of very similar dimensions of these chemical components approximately a hundred% of Yb-doping could be attained.
The thermal conductivity of common double tungstates is from the purchase to 3–4 W/(K m) �?which isn't lousy as opposed with other laser crystals (although several situations fewer than for YAG), and quite big as opposed While using the thermal conductivity of regular glasses.
Li2WO4-WO3 flux was properly applied reducing The expansion temperature below 900 oC. In keeping with solitary crystal x-ray measurements, the crystal corresponds towards the P2/n Place group.
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