Resonantly Pumped Mid-IR Laser.
DEPARTMENT OF THE NAVY WASHINGTON DC
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A solid-state laser operative in the mid infrared region 3-5 micronmeter comprises a YLF laser including a trivalent terbium activator which is pumped by a resonant external laser source HoYLF, 2.06 micronmeter laser to directly populate the upper laser level which achieves inversion before non-radiative decay depletes the initial laser-level population. The initial laser manifold that is externally pumped is the 7F2 manifold. Inversion is then between the 7F3 and 7F5 manifolds and laser oscillation at 4.1 micronmeter is obtained. Author
- Lasers and Masers