The Definitive Guide to KYW Crystal
The Definitive Guide to KYW Crystal
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In practical conditions, the Yb:KYW crystal has found its niche in high-power laser programs on account of its capability to produce higher energy ultrashort laser pulses though retaining a compact dimensions. The interplay of its characteristics �?seamless ytterbium substitution, robust absorption qualities, ultrashort pulse generation and performance in Electrical power conversion �?positions the Yb:KYW crystal for a cornerstone while in the laser know-how, covering numerous fields ranging from scientific investigate to industrial programs.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, is a outstanding materials that plays a vital job in laser technology. Its Principal functionality will be to generate ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at all-around 981 nm can make the crystal well suited for diode pumping. It is more Improved by its impressive effectiveness in this process, coupled with its low quantum defect.
FIG. 4. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active factor for an output energy of seven-hundred mW. The width of
Optical structure of the laser with direct pumping with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output on the radiation, WP is really a 50 percent-wave plate, CL is really a collimating lens, FL is a focusing lens, AE is undoubtedly an Lively component comprised of an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC could be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
The monoclinic crystal structures brings about a pure birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are used as lasing products to crank out ultrashort (~ one hundred-two hundred fs) substantial power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
Tungstates are inclined to have high Raman coefficients (�?Raman scattering). For that reason, they will make sizeable Raman gain at average optical intensities. It is possible to utilize the laser crystal itself like a Raman click here converter.
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to the similar dimensions of those chemical elements as many as one hundred% of Yb-doping could possibly be accomplished.
Even though ytterbium-doped laser achieve media commonly show a small quantum defect, ytterbium-doped tungstates let for notably modest values. One example is, a 1030-nm Yb:YAG laser would Commonly be pumped all around 940 nm, While Yb:KGW or Yb:KYW might be most efficiently pumped all-around 981 nm.
Li2WO4-WO3 flux was properly used decreasing the growth temperature under 900 oC. In keeping with one crystal x-ray measurements, the crystal corresponds towards the P2/n Area group.
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