The KYW Crystal Diaries
The KYW Crystal Diaries
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is quite significant when compared with that of Yb:YAG. This permits for huge wavelength tunability and for Significantly shorter pulse durations from manner-locked lasers. Values well under one hundred fs have been attained with passive method locking.
This exceptional attribute of ultrafast pulses enables nonlinear optical conversation with tissue at very low In general publicity, and drives purposes like deep-tissue multiphoton microscopy and high-precision eye surgery
The Yb:KYW crystal’s proficiency in light-weight absorption at around 981 nm can make the crystal like minded for diode pumping. It can be additional Improved by its amazing performance in this method, coupled with its lower quantum defect.
Shade-coded reflectivity of a Bragg mirror being a purpose of wavelength and angle with the incident beam.
Optical layout of a laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output of the radiation, WP can be a half-wave plate, CL is actually a collimating lens, FL is often a concentrating lens, AE can be an active element created from an Yb:KYW crystal, DM can be a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC would be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
The monoclinic crystal structures brings about a pure birefringence, helping to avoid thermally induced polarization rotation and depolarization decline.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and are made use of as lasing elements to create ultrashort (~ a hundred-200 fs) higher ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser methods.
Spatial framework in the beam and the corresponding depth profiles I in the output in the laser.
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... Not just the position of crystal within the cavity but also the amplification axis of crystal affects the laser Procedure enormously, since the absorption and emission cross sections in the crystal are really various in accordance with the orientation on the crystal.
The thermal conductivity of common double tungstates is in the get to three–4 W/(K m) �?which is not terrible compared with other laser crystals (Despite the fact that quite a few occasions below for YAG), and rather large in contrast Using the thermal conductivity of normal Eyeglasses.
Li2WO4-WO3 flux was productively utilized lessening The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds on the P2/n space group.
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