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Excited-state absorption in the range of pumping and laser efficiency of Cr4+:forsterite
N V Kuleshov1, A V Podlipensky, V G Shcherbitsky
1International Laser Center, Belarus State Politechnical Academy, Scorina Avenue 65, Minsk 220027, Belarus.
Optics Letters
|December 19, 2007
Abstract:
The absorption saturation and the laser efficiency of Cr(4+): forsterite were measured with 1064-nm (E || b), 980-nm (E || c), and 780-nm (E || b) pulsed laser pumping. A slope efficiency of 32% was obtained for the 980-nm (E || c) pump wavelength, where the excited-state absorption losses were shown to be negligible.
