Resonantly Pumped, Erbium-Doped, GSGG, 2.8 Micron, Solid State Laser with Energy Recycling and High Slope Efficiency.
Patent, Filed 14 May 92, Patented 6 Apr 93,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A laser system and method for producing a laser emission at a wavelength of substantially 2.8 microns and having a quantum efficiency of at least unity and a slope efficiency of about 36. In a preferred embodiment of the invention, the laser system comprises a laser cavity defined by first and second reflective elements with one of the reflective elements operating as an output coupler a crystal disposed in the laser cavity and having a GSGG host material doped with a preselected percent concentration of erbium, the GSGG host material and preselected percent concentration of erbium being selected so as to provide a quantum efficiency of at least unity by the 4I132 4I132 right arrow 4I92 4I152 upconversion process and a slope efficiency of about 36 when the crystal is resonantly pumped and a resonant pump laser for directly pumping the 4I112 upper laser state of the erbium with a pump beam to cause the crystal to produce a laser emission corresponding to the 4I112 right arrow 4I132 laser transition having a wavelength of substantially 2.8 microns.
- Lasers and Masers
- Quantum Theory and Relativity
- Inorganic Chemistry