The Greatest Guide To KYW Crystal
The Greatest Guide To KYW Crystal
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We existing a twin-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output power around 24 W and pulse size of 20 ns,or like a regenerative amplifier with output ability as much as 21 W and pulse period below 200 fs right after compression of chirped pulses. Equally lasers have exceptional beam excellent with beam parameter M2
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Optical format of the laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output of your radiation, WP is usually a 50 %-wave plate, CL is usually a collimating lens, FL is usually a concentrating lens, AE is surely an Lively aspect created from 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 is actually a semiconductor saturable-absorber mirror.
Before the event of Nd:YAG, Nd3+:CaWO4 was an important uncommon-earth-doped laser gain medium. It absolutely was in actual fact Utilized in the main continually functioning crystal laser.
FIG. one. Optical structure of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
A large brightnessQ-switched oscillator and regenerative amplifier based on a dual-crystal Yb:KGW laser
... at 50 %-top had been created in a master oscillator with selfsynchronization in the axial modes, described within our before article. 21 The new version of the laser, as opposed to that described within our previously short article, used an Yb:KYW crystal with the N pcut (optical axis N p with the index ellipsoid was parallel to the propagation way of your laser radiation), With all the polarization with the created radiation directed together the N m axis.
... Not simply the place of crystal during the cavity and also the amplification axis of crystal affects the laser Procedure tremendously, since the absorption and emission cross sections from the crystal are quite distinct in accordance with the orientation from the crystal.
Whilst ytterbium-doped laser acquire media generally show a small quantum defect, ytterbium-doped tungstates allow for for significantly modest values. For instance, a 1030-nm Yb:YAG laser would Ordinarily be pumped all around 940 nm, whereas Yb:KGW or Yb:KYW can be most proficiently pumped all over 981 nm.
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Concurrently, a shorter laser wavelength may be received; it is possible to operate by using a quantum defect perfectly below 1%. Being a consequence, the warmth technology may be so modest this partly compensates the lessen thermal conductivity.