KYW Crystal - An Overview
KYW Crystal - An Overview
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The comparison with Eyeglasses is acceptable For the reason that massive obtain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We present a twin-crystal Yb:KGW laserthat iscapable to operate as a Q-switched oscillator with output electric power as much as 24 W and pulse length of 20 ns,or as a regenerative amplifier with output electricity up to 21 W and pulse period down below 200 fs following compression of chirped pulses. Equally lasers have exceptional beam high quality with beam parameter M2
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Optical layout of a laser with direct pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output in the radiation, WP is actually a 50 %-wave plate, CL is a collimating lens, FL is a concentrating lens, AE is surely an Energetic element created from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC is definitely the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C navy standards, an adhesion examination involved implementing a tape that meets LT-ninety technical specs onto the lens movie layer. The tape was affixed thoroughly and after that eradicated vertically. This course of action was done 3 times, causing no blistering website or peeling.
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A large brightnessQ-switched oscillator and regenerative amplifier according to a dual-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can be extremely higher without having sizeable quenching as the replaced ions have a really very similar ion radius, and also the inter-ion length is fairly substantial.
Having said that, at the time Nd3+:YAG turned commercially readily available, the fascination in CaWO4 dropped sharply. In later several years, sure other tungstate crystals started to appeal to a great deal of consideration.
The thermal conductivity of widespread double tungstates is in the purchase to 3–four W/(K m) �?which is not undesirable compared with other laser crystals (Though quite a few situations fewer than for YAG), and reasonably substantial compared Together with the thermal conductivity of normal Eyeglasses.
This tandem of characteristics has considerably-reaching implications, significantly in the development of compact nonetheless powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at home temperature were being measured. The emission spectrum and lifetime from the 3 F 4 energized point out ended up decided. Making use of regular and modified Judd–Ofelt theories, the intensity parameters along with the radiative lifetimes ended up calculated and great arrangement with the experimental effects was obtained for each theories.
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