KYW Crystal - An Overview
KYW Crystal - An Overview
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly big when compared with that of Yb:YAG. This permits for huge wavelength tunability and for Considerably shorter pulse durations from mode-locked lasers. Values perfectly underneath 100 fs happen to be obtained with passive mode locking.
The comparison with Eyeglasses is acceptable since the massive attain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals with the compound melts congruently at 1007 oC, on the other hand melt crystallization of high quality crystal is not possible on account of phase changeover at ~920 oC. The top seeded Alternative strategy from
The absorption and emission spectra of Yb:KYW Crystals display powerful peaks at 980 nm and 1030 nm, respectively, making certain productive Strength conversion and significant general performance in laser programs.
Optical format of a laser with direct pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output of your radiation, WP is often a half-wave plate, CL is usually a collimating lens, FL is actually a concentrating lens, AE is surely an Energetic element made out of an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC may be the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
The monoclinic crystal constructions results in a normal birefringence, helping to stay away from thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are made use of as lasing elements to make ultrashort (~ 100-two hundred fs) significant electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser systems.
Spatial structure from the beam and also the corresponding depth profiles I within the output with the laser.
... at 50 percent-height were created in a very grasp oscillator with selfsynchronization of the axial modes, explained within our earlier posting. 21 The new edition of your laser, contrary to that described inside our earlier report, utilised an Yb:KYW crystal with an N pcut (optical axis N p with the index ellipsoid was parallel for the propagation direction with the laser radiation), Together with the polarization from the created radiation directed along the N m axis.
Nonetheless, at the time Nd3+:YAG became commercially accessible, the fascination in CaWO4 dropped sharply. In afterwards many years, specified other tungstate crystals started to bring in a lot of interest.
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Li2WO4-WO3 flux was productively used decreasing the growth temperature underneath 900 oC. In accordance with one crystal x-ray measurements, the crystal corresponds towards the P2/n space group.
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