The Single Best Strategy To Use For KYW Crystal
The Single Best Strategy To Use For KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is rather big in comparison with that of Yb:YAG. This allows for broad wavelength tunability and for A lot shorter pulse durations from manner-locked lasers. Values effectively beneath 100 fs happen to be attained with passive mode locking.
The comparison with glasses is suitable For the reason that significant get bandwidth permits e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in mild absorption at all over 981 nm makes the crystal well matched for diode pumping. It is actually further Increased by its impressive performance in this process, coupled with its lower quantum defect.
Color-coded reflectivity of the Bragg mirror to be a function of wavelength and angle from the incident beam.
Optical format of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output on the radiation, WP is really a half-wave plate, CL is actually a collimating lens, FL can be a concentrating lens, AE is definitely an Energetic component constructed from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC will be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C navy specifications, an adhesion take a look at associated applying a tape that meets LT-90 specs on to the lens film layer. The tape was affixed absolutely and then eradicated vertically. This method was done three times, resulting in no blistering or peeling.
FIG. 1. Optical layout of the laser with direct pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
Tungstates have a tendency to own high Raman coefficients (�?Raman scattering). Thus, they're able to generate considerable Raman gain at moderate optical intensities. It is achievable to use the laser crystal by itself for a Raman converter.
... at half-top ended up created inside of a learn oscillator with selfsynchronization of your axial modes, explained within our before short article. 21 The new edition in the laser, not like that described in our earlier write-up, utilized an Yb:KYW crystal with the N pcut (optical axis N p in the index ellipsoid was parallel towards the propagation way in the laser radiation), Using the polarization of your generated radiation directed together the N m axis.
... Don't just the posture of crystal inside the cavity but in addition the amplification axis of crystal affects read more the laser Procedure greatly, because the absorption and emission cross sections with the crystal are quite distinct in accordance with the orientation in the crystal.
Even though ytterbium-doped laser attain media commonly exhibit a small quantum defect, ytterbium-doped tungstates make it possible for for significantly compact values. Such as, a 1030-nm Yb:YAG laser would Typically be pumped all-around 940 nm, While Yb:KGW or Yb:KYW could possibly be most competently pumped all over 981 nm.
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