KYW Crystal Secrets
KYW Crystal Secrets
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW may be very big when compared with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from manner-locked lasers. Values nicely down below a hundred fs have already been realized with passive manner locking.
This distinctive attribute of ultrafast pulses enables nonlinear optical conversation with tissue at minimal General exposure, and drives purposes for example deep-tissue multiphoton microscopy and higher-precision eye surgery
time. Crystals on the compound melts congruently at 1007 oC, nonetheless soften crystallization of top of the range crystal is extremely hard as a result of phase transition at ~920 oC. The very best seeded Alternative strategy from
Shade-coded reflectivity of a Bragg mirror for a functionality of wavelength and angle with the incident beam.
Optical format of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is usually a fifty percent-wave plate, CL is a collimating lens, FL can be a concentrating lens, AE is undoubtedly an Lively factor comprised of an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC may be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C military specifications, an adhesion take a look at associated implementing a tape that meets LT-ninety specifications on to the lens movie layer. The tape was affixed fully and after that eliminated vertically. This method was carried out three times, resulting in no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are made use of as lasing elements to make ultrashort (~ 100-two hundred fs) significant electrical check here power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
Spatial construction in the beam as well as the corresponding intensity profiles I at the output of your laser.
... at fifty percent-height were created in a very grasp oscillator with selfsynchronization from the axial modes, explained within our earlier article. 21 The new edition in the laser, contrary to that described within our previously posting, employed an Yb:KYW crystal having an N pcut (optical axis N p on the index ellipsoid was parallel towards the propagation course on the laser radiation), Using the polarization on the produced radiation directed alongside the N m axis.
... Not merely the placement of crystal from the cavity but will also the amplification axis of crystal has an effect on the laser Procedure greatly, as the absorption and emission cross sections of your crystal are quite different in accordance with the orientation of your crystal.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared with its counterpart Yb:KGW, is often a amazing substance that plays a crucial part in laser technological innovation. Its Major perform is to deliver ultrashort pulses of light, spanning just a few hundred femtoseconds.
Inquire RP Photonics for virtually any tips concerning tungstate lasers, together with femtosecond lasers and large-power lasers.