KYW Crystal Secrets
KYW Crystal Secrets
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In practical terms, the Yb:KYW crystal has identified its niche in significant-electric power laser purposes on account of its power to create superior Power ultrashort laser pulses although keeping a compact sizing. The interaction of its capabilities �?seamless ytterbium substitution, potent absorption features, ultrashort pulse generation and efficiency in Vitality conversion �?positions the Yb:KYW crystal being a cornerstone within the laser technological know-how, covering varied fields starting from scientific investigate to industrial applications.
The comparison with glasses is suitable since the substantial acquire bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
We current a dual-crystal Yb:KGW laserthat iscapable to operate to be a Q-switched oscillator with output electric power approximately 24 W and pulse length of twenty ns,or like a regenerative amplifier with output energy nearly 21 W and pulse length down below 200 fs just after compression of chirped pulses. Each lasers have excellent beam top quality with beam parameter M2
Shade-coded reflectivity of the Bragg mirror as a perform of wavelength and angle with the incident beam.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the comparable sizes of these chemical factors approximately one hundred% of Yb-doping can be obtained. This distinctive characteristic permits ytterbium to go ahead and take area of yttrium with just about no disruption to your crystal’s lattice.
Right after air drying and subsequent cleansing using a cotton fabric soaked in alcohol, the film surface showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are made use of as lasing resources to generate ultrashort (~ a hundred-200 fs) high electric power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser units.
Tungstates are likely to acquire substantial Raman coefficients (�?Raman scattering). For that reason, they could create considerable Raman acquire at average optical intensities. It is feasible to use the laser crystal alone to be a Raman converter.
For tungstates, the ytterbium doping concentration can be very substantial with out important quenching since click here the replaced ions have an incredibly identical ion radius, and the inter-ion length is relatively large.
Having said that, as soon as Nd3+:YAG became commercially offered, the interest in CaWO4 dropped sharply. In later many years, particular other tungstate crystals started to entice plenty of focus.
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Li2WO4-WO3 flux was correctly applied decreasing the growth temperature beneath 900 oC. As outlined by solitary crystal x-ray measurements, the crystal corresponds for the P2/n Room team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature ended up calculated. The emission spectrum and lifetime in the 3 F 4 enthusiastic point out were being determined. Utilizing normal and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes were being calculated and good agreement Using the experimental outcomes was obtained for each theories.
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