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Tarpon Springs, FL, United States

Parisi D.,CNR Institute of Neuroscience | Veronesi S.,CNR Institute of Neuroscience | Volpi A.,University of Pisa | Gemmi M.,Italian Institute of Technology | And 3 more authors.
Journal of Physics D: Applied Physics | Year: 2014

A novel laser material BaYLuF8 (BYLF), doped with 12 at% of Tm3+, has been grown and optically investigated, in order to evaluate its potential performances as a 2 m laser. The BYLF crystal is interesting mainly because indications are that the mixed crystal would be sturdier than BaY2F,8 (BYF). The addition of lutetium would improve the thermo-mechanical properties of the host. Absorption, fluorescence and lifetime measurements have been performed in the temperature range 10-300 K focusing on the 3H4 and 3F4 manifolds, those involved in the laser scheme at 2 m. The Stark sublevels structure of Tm 3+ up to the 1D2 manifold has been figured out. Diode-pumped CW laser emission at 2 m has been achieved obtaining a slope efficiency of about 28% with respect to the absorbed power, by pumping along the Z-axis. A maximum output power of 240 mW was achieved by pumping along the favourable Y-axis, with an incident power of about 800 mW. © 2014 IOP Publishing Ltd.


Turri G.,Rollins College | Turri G.,University of Central Florida | Gorman C.,University of Central Florida | Cassanho A.,AC Materials Inc. | And 2 more authors.
Journal of the Optical Society of America B: Optical Physics | Year: 2011

We grew oriented single crystals of BaYLuF8 and Nd:BaY 2F8 doped with Nd3+. An experimental investigation and comparison of the spectroscopic properties of the two crystals are presented to guide their use as lasing elements in solid-state lasers. The absorption and stimulated emission cross section of the Nd3+ 4F3/2 decay to the 4I9/2, 4I11/2 and 4I13/2 states, for light linearly polarized along the three principal axes, were obtained at room temperature. Nd:BaYLuF8 shows absorption and stimulated emission cross sections that are very similar to those of Nd:BaY2F 8, making it a good candidate for lasers. Because Nd:BaYLuF 8 is easier to grow than Nd:BaY2F8, it is a viable alternative as a laser medium. © 2011 Optical Society of America.


Grant
Agency: Department of Defense | Branch: Missile Defense Agency | Program: SBIR | Phase: Phase I | Award Amount: 63.92K | Year: 1999

N/A


Grant
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 64.33K | Year: 1999

N/A


N/A

Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 137.44K | Year: 2000

N/A

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