Nd-doped Y<sub>3</sub>Ga<sub><i>x</i></sub>Al<sub>(5−<i>x</i>)</sub>O<sub>12</sub> (YGAG) materials are investigated for their usefulness as compositionally tuned laser materials. An analysis of line-center wavelength, line broadening, and line strength with Ga concentration is conducted to assess the feasibility of constructing a compositionally tuned 0.94-μm laser. Spectroscopic results on this analysis are presented. A laser rod of Nd:Y<sub>3</sub>Ga<sub>1.35</sub>Al<sub>3.65</sub>O<sub>12</sub> was made to lase at 0.94465 μm and its performance characterized. This represents the first such laser demonstration on the <sup>4</sup><i>F</i><sub>3/2</sub>→<sup>4</sup><i>I</i><sub>9/2</sub> laser transition in Nd:YGAG. Improved optical quality and the use of compositional variations of the YGAG structure is expected to improve the laser performance as these materials are more fully developed.
© 1998 Optical Society of America
(140.3530) Lasers and laser optics : Lasers, neodymium
(160.5690) Materials : Rare-earth-doped materials
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
Brian M. Walsh, Norman P. Barnes, Ralph L. Hutcheson, Randy W. Equall, and Baldassare Di Bartolo, "Spectroscopy and lasing characteristics of Nd-doped Y3GaxAl(5 x)O12 materials: application toward a compositionally tuned 0.94-μm laser," J. Opt. Soc. Am. B 15, 2794-2801 (1998)