Er:glass laser rod 1535nm eye safe laser transmitter
Co:Spinel
Co spinel-saturable absorbers for the passive Q-switching of solid-state lasers operating at eye-safe wavelength of 1.5um Cobalt-doped magnesium aluminate spinel (Co:MgAl2O4) allow the generation of short nanosecond pulse with high peak power around the eye-safe wavelength of 1.5um,perfect for telemetry applications. The absorption
spectrum of Co2+-doped MgAl2O4 exhibited a broad absorption band in the wavelength range of 1200-1600 nm,which indicated that Co2+ ions substituted for the tetrahedrally coordinated Mg2+ ions in the MgAl2O4 lattice. Passive Q-switching of solid-state lasers with solid-state saturable absorbers is a very attractive Q-switching technique because it allows to develop compact and low cost laser sources of nano and sub nanosecond pulses far
various applications
Lasers emitting at 1.5um are of great interest for several industrial applications. This interest is, first of all, due to eye-safety of 1.5um radiation. Other advantages of this wavelength are high transparency in atmosphere and
fused-silica wave guides and availability of sensitive room temperature light detectors(Ge and InGaAs photo
diodes).All this makes 1.5μm lasers very attractive for applications in range-finder, environmental sensing,
telecommunications, surgery,etc. Co:Spinel absorption peak is close to 1520nm,which is most used in eye-safe laser. The absorption cross-section at 1520nm is 3.5x10-19cm2 and at 1331 is 2.8x10-19cm2,it has reported as
Q-switch crystal for Er,Yb:glass and Nd:GYSGG,Nd:YALO3.
Features
Suitable for 1540 nm eye-safe lasers
High absorption section
Negligible excited state absorption
High optical quality
Applications
Eye-safe 1540 nm Er:glass laser
1440 nm laser
1340 nm laser
Eye-safe laser range finder
