The Single Best Strategy To Use For KYW Crystal
The Single Best Strategy To Use For KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is rather big in contrast with that of Yb:YAG. This permits for broad wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values effectively underneath a hundred fs happen to be accomplished with passive method locking.
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We present a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output electric power nearly 24 W and pulse length of 20 ns,or as a regenerative amplifier with output ability as much as 21 W and pulse duration below two hundred fs following compression of chirped pulses. The two lasers have excellent beam high-quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals display strong peaks at 980 nm and 1030 nm, respectively, making certain economical Electricity conversion and significant functionality in laser units.
Optical layout of the laser with direct pumping with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output of your radiation, WP is often a fifty percent-wave plate, CL is a collimating lens, FL is often a focusing lens, AE can be an Energetic element made from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC could be the output mirror, and SAM is a semiconductor saturable-absorber mirror.
Prior to the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser achieve medium. It absolutely was in reality Utilized in the 1st continuously working crystal laser.
FIG. 1. Optical structure of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
five mm other than the center with the beam caustic. As a way to Examine the method matching simulation, we carried out the experiment with Ng-Slice crystal oscillator, which was created previously As well as in a identical condition with simulation [eleven]. As shown in Determine 3(b) with purple dots and line, the CW output electrical power is very depending on the place of laser crystal and the experimental final result coincides properly with simulation result. For a Notice, multimode Procedure occurred in experiment once the dimensions of the pump beam is more substantial than TEM00 cavity manner and it leads to increased CW output ability within the displacement region under 3.5 mm.
For tungstates, the ytterbium doping focus can be very substantial without important website quenching as the replaced ions have a very related ion radius, and the inter-ion length is pretty big.
Even so, at the time Nd3+:YAG became commercially obtainable, the fascination in CaWO4 dropped sharply. In afterwards decades, particular other tungstate crystals started to draw in many notice.
Even though ytterbium-doped laser obtain media normally show a small quantum defect, ytterbium-doped tungstates let for specially small values. As an example, a 1030-nm Yb:YAG laser would Typically be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW could possibly be most effectively pumped close to 981 nm.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, is actually a exceptional materials that performs a crucial part in laser engineering. Its Main perform is usually to create ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
Check with RP Photonics for just about any information regarding tungstate lasers, including femtosecond lasers and high-electricity lasers.