Laser action has been demonstrated in two new tunable -doped crystals. Absorption, emission, and excitation measurements for various crystal orientations have been performed for chromium-doped and single crystals. From the spectroscopic measurements, two optical active centers were identified: tetrahedrally coordinated and octahedrally coordinated . Gain-switched, tunable laser operation of centers has been demonstrated in both crystals. An ultrawide tuning range from 1150 to 1480 nm for and 1220–1380 nm for has been achieved. To our knowledge this is the widest bandwidth and the most near-infrared shifted wavelength range for lasing ever demonstrated for ions.
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C. Deka, M. Bass, B. H. T. Chai, and Y. Shimony
J. Opt. Soc. Am. B 10(9) 1499-1507 (1993)
M. A. Noginov and G. B. Loutts
J. Opt. Soc. Am. B 16(1) 3-11 (1999)
V. Petričević, A. B. Bykov, J. M. Evans, and R. R. Alfano
Opt. Lett. 21(21) 1750-1752 (1996)