Cobalt-doped magnesium aluminate (Spinel) is a solid-state passive Q-Switch material working in the 1200nm - 1600nm range. Solid-State passive Q-Switches generating high power laser pulses are attractive because they allow for the development of compact low-cost laser sources without the need for a high voltage power supply. Erbium Glass lasers emitting in the 1.5μm are of great interest for being in eye safe wavelength region with applications include dermatology systems, laser surgery, range-finding, environmental sensing, telecommunications, and Lidar.
Passive Q-Switches are specified by initial transmission at the wavelength of interest.
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