An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is extremely big in contrast with that of Yb:YAG. This allows for wide wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values very well underneath one hundred fs happen to be accomplished with passive manner locking.
This special characteristic of ultrafast pulses allows nonlinear optical conversation with tissue at very low Over-all publicity, and drives purposes which include deep-tissue multiphoton microscopy and high-precision eye surgical procedure
The Yb:KYW crystal’s proficiency in mild absorption at all around 981 nm can make the crystal like minded for diode pumping. It really is more enhanced by its remarkable performance in this method, coupled with its minimal quantum defect.
FIG. 4. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output energy of seven hundred mW. The width of
Optical layout of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output of your radiation, WP is usually a half-wave plate, CL is actually a collimating lens, FL is really a focusing lens, AE is surely an Energetic factor constructed from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC may be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
The monoclinic crystal constructions brings about a organic birefringence, assisting to stay away from thermally induced polarization rotation and depolarization decline.
FIG. one. Optical layout of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Tungstates have a tendency to possess superior Raman coefficients (�?Raman scattering). Thus, they will generate major Raman obtain at average optical intensities. It is possible to utilize the laser crystal itself being a Raman converter.
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On the other hand, after Nd3+:YAG became commercially available, the fascination in CaWO4 dropped sharply. In later years, selected other tungstate crystals started to entice loads of awareness.
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Li2WO4-WO3 flux was effectively utilized lessening the growth temperature under 900 oC. In accordance with single crystal x-ray measurements, the crystal corresponds on the P2/n Room group.
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