Co:Spinel (Co:MgAl2O4) Crystals
|3,5x10-19 @ 1540 nm
|≤λ/10 @ 632.8 nm
|+0.0 mm/-0.2 mm
|≤ 10 arcsec
|≤ 10 arcmin
|10 - 5 scratch & dig
|<0.1 mm @ 45deg
|≤0,2% @ 1540 nm
High absorption cross section of 3.5 x 10-19 cm2 permits
Q-switching of Er:glass laser without intracavity focusing both with
flash-lamp and diode-laser pumping. Negligible excited-state
absorption results in high contrast of Q-switch, i.e. the ratio of
initial (small signal) to saturated absorption is higher than 10.
Finally, excellent optical, mechanical and thermal properties of
the crystal gives an opportunity to design compact and reliable
laser sources with this passive Q-switch.
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