Co:MA


Formula                     Co2+:MgAl2O4


Orientation                


Surfaces                    flat / flat


Flatness                    <ʎ/10 @ 632.8 nm


Parallelism                 <10 arcsec


Perpendicularity         <10 arcmin


Protective chamfer      <0.1 mm x 45 °


Surface quality           10-5 S-D




   





Co:Spinel is a relatively new material for saturable absorber passive Q-switching in lasers emitting from 1.2 to 1.6 microns, in particular, for eye-safe 1.54 μm Er:glass laser.High absorption cross section of 3.5 x 10-19 cm2 permits Q-switching of Er:glass laser.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 give an opportunity to design compact and reliable laser sources with this passive Q-switch.

Basic properties

Formula

Co2+:MgAl2O4

Crystal Structure

Cubic

Orientation

Surfaces

flat / flat

Surface quality

10-5 S-D

Surface flatness

<ʎ/10 @ 632.8 nm

AR coatings reflectivity

<0.2 % @ 1540 nm

Damage Threshold

>500 MW / cm 2

Diameter

typical:5–10mm

Dimensional tolerances

+0/-0.1 mm

Transmission

typical:0.70,0.80,0.90@1533nm

Absorption cross section

3.5×10^-19 cm2 @ 1540 nm

Parallelism error

<10 arcsec

Perpendicularity

<10 arcmin

Protective chamfer

<0.1 mm x 45 °

Customized

You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.