Co:Spinel Crystals

Co2+:MgAl2O4 (Co:Spinel or Co:MALO) is a relatively new material for passive Q-switching in lasers emitting from 1.2 to 1.6 µm, in particular, for eye-safe 1.54 µm Er:glass laser, but also works at 1.44 µm and 1.34 µm wavelengths.

 

High absorption cross section (3.5 × 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.

 

Delivery

Estimated delivery time: Request

Initial Transmission, %
Diameter, mm

Co:Spinel Crystals

Code Initial Transmission, % Diameter, mm Price Delivery Add to cart
CoMALO-05-30 30 5 656 $ Request To cart
CoMALO-05-40 40 5 656 $ Request To cart
CoMALO-05-50 50 5 656 $ Request To cart
CoMALO-05-60 60 5 656 $ Request To cart
CoMALO-05-70 70 5 656 $ Request To cart
CoMALO-05-80 80 5 656 $ Request To cart
CoMALO-05-90 90 5 656 $ Request To cart
Delicious
Transmission tolerances ±2 %
Surface flatness <λ/10 @ 632.8 nm
Diameter tolerances +0.0 / -0.2 mm
Parallelism error < 20 arcsec
Perpendicularity < 5 arcmin
Surface quality 10-5 scratch & dig (per MIL-O-13830A)
Protective chamfers <0.1 mm @ 45°
AR Coating reflectivity <0.2 % @ 1540 nm

 

 
Co2+:MgAl2O4 Cr4+:YAG
Working wavelength range, µm
1.2-1.6 0.8–1.2
Absorption cross-section, cm2
3.5×10-19
 
(at 1.54 µm)
5×10-18
(at 1.06 µm)
Initial transmittance, %
30-99 20-99

 

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