KYW Crystal - An Overview
KYW Crystal - An Overview
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In functional terms, the Yb:KYW crystal has found its niche in high-electrical power laser programs as a consequence of its power to deliver large energy ultrashort laser pulses even though keeping a compact dimensions. The interaction of its characteristics �?seamless ytterbium substitution, powerful absorption attributes, ultrashort pulse technology and effectiveness in Electricity conversion �?positions the Yb:KYW crystal like a cornerstone inside the laser technological know-how, masking varied fields ranging from scientific exploration to industrial applications.
This exclusive attribute of ultrafast pulses enables nonlinear optical conversation with tissue at reduced General publicity, and drives programs which include deep-tissue multiphoton microscopy and large-precision eye surgical treatment
Femtosecond laser based upon Yb:KYW crystals with suppression of spectral narrowing inside of a regenerative amplifier by spectral profiling of the pulse
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Optical structure of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output with the radiation, WP is often a 50 %-wave plate, CL is a collimating lens, FL is a concentrating lens, AE is really an Energetic aspect made out of an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC will be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
The monoclinic crystal buildings brings about a normal birefringence, assisting to prevent thermally induced polarization rotation and depolarization loss.
FIG. one. Optical structure of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial construction website with the beam as well as the corresponding intensity profiles I with the output from the laser.
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However, as soon as Nd3+:YAG grew to become commercially out there, the desire in CaWO4 dropped sharply. In later a long time, selected other tungstate crystals started to catch the attention of lots of attention.
The thermal conductivity of common double tungstates is on the buy to 3–4 W/(K m) �?which is not lousy as opposed with other laser crystals (Despite the fact that various occasions a lot less than for YAG), and relatively significant as opposed Using the thermal conductivity of typical Eyeglasses.
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Simultaneously, a shorter laser wavelength might be received; it can be done to operate that has a quantum defect effectively beneath 1%. As a consequence, the heat era is often so tiny that this partly compensates the reduce thermal conductivity.