Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The comparison with glasses is appropriate Because the big acquire bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We current a twin-crystal Yb:KGW laserthat iscapable to work for a Q-switched oscillator with output electricity up to 24 W and pulse size of twenty ns,or as a regenerative amplifier with output ability approximately 21 W and pulse duration underneath 200 fs just after compression of chirped pulses. Each lasers have great beam quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by impressive linear arrays of semiconductor injection lasers obtaining fiber output. To prevent spectral narrowing through amplification as well as the corresponding lengthening of your amplified pulse when it really is compressed, a combination of two Yb:KYW crystals had been utilized, While using the spectral maxima with the amplification shifted relative to one another and with spectral profiling of your amplified radiation.
Adhesion Test Compliant with MIL-C-675C armed service specifications, an adhesion test included applying a tape that satisfies LT-90 specifications on to the lens film layer. The tape was affixed completely after which you can taken out vertically. This treatment was done three times, leading to no blistering or peeling.
FIG. 1. Optical layout of a laser with direct pumping with the radiation of more info semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
5 mm besides the center on the beam caustic. In an effort to check the mode matching simulation, we carried out the experiment with Ng-Slice crystal oscillator, which was formulated Formerly and in a similar problem with simulation [eleven]. As shown in Figure three(b) with purple dots and line, the CW output electricity is extremely depending on the place of laser crystal and also the experimental consequence coincides perfectly with simulation end result. For a Notice, multimode Procedure occurred in experiment once the size with the pump beam is greater than TEM00 cavity method and it will cause higher CW output electricity during the displacement area underneath three.five mm.
For tungstates, the ytterbium doping concentration can be quite higher without the need of important quenching as the changed ions have an extremely identical ion radius, as well as the inter-ion length is comparatively substantial.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW mainly because of the identical sizes of these chemical features as many as one hundred% of Yb-doping could possibly be accomplished.
The thermal conductivity of typical double tungstates is of the get to 3–four W/(K m) �?which isn't negative compared with other laser crystals (Despite the fact that several moments lower than for YAG), and reasonably significant in comparison with the thermal conductivity of common glasses.
This tandem of characteristics has significantly-reaching implications, particularly in the development of compact yet powerfull lasers.
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Request RP Photonics for virtually any information relating to tungstate lasers, such as femtosecond lasers and superior-electric power lasers.