New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The comparison with Eyeglasses is acceptable For the reason that large acquire bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in light absorption at around 981 nm makes the crystal like minded for diode pumping. It is actually further more enhanced by its extraordinary efficiency in this process, coupled with its lower quantum defect.
FIG. 4. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of a laser with a rectangular Lively factor for an output energy of 700 mW. The width of
Optical format of a laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output on the radiation, WP is really a fifty percent-wave plate, CL can be a collimating lens, FL is really a concentrating lens, AE is an Lively aspect made out of an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC may be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C military services benchmarks, an adhesion test involved making use of a tape that meets LT-ninety specifications on to the lens movie layer. The tape was affixed entirely after which you can eliminated vertically. This treatment was carried out thrice, resulting in no blistering or peeling.
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five mm apart from the middle with the beam caustic. In an effort to check the manner matching simulation, we done the experiment with Ng-Slice crystal oscillator, which was made Formerly As well as in a exact same affliction with simulation [11]. As proven in Figure 3(b) with purple dots and line, the CW output energy is very dependent on the situation of laser crystal as well as experimental result coincides perfectly with simulation result. As a Take note, multimode Procedure occurred in experiment if the dimensions with the pump beam is bigger than TEM00 cavity method and it triggers greater CW output electricity inside the displacement location below three.5 mm.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to the identical sizes of such chemical elements as many as a hundred% of Yb-doping might be obtained.
When ytterbium-doped laser achieve media typically show a little quantum defect, ytterbium-doped tungstates make it possible for for notably compact values. By way of example, a 1030-nm Yb:YAG laser would Usually be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most proficiently pumped around 981 nm.
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