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A LiF:F +3 color center laser was pumped by the second harmonic beam of a Ti: sapphire laser pumped by YAG:Nd 3+ laser. A limited stability was obtained in the laser operation. We studied the photochemical processes occurring in such pumping and the reason for the limited LiF:F +3 laser operation.
We have studied a nonlinear process in the generation of narrow-band tunable Stokes radiation of frequency v s =2v 2 −v 1 under a biharmonic tunable pulsed laser pumped with v 1 and v 2 frequencies (v 1 > v 2 ) in single-mode silica fibers. The Stokes radiation is generated at a high conversion efficiency up to 40% when the pumping frequency...
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