Abstract
We characterize the beam quality of visible-wavelength GRIN-SCH-SQW lasers in terms of geometry and driving current. A second-moment-based, free beam measurement of M 2 yields values ranging from near unity on the plane parallel to the junction, to near 10 in the perpendicular plane. The M 2 values exhibit a dependence on the shape of the L-I characteristic. Higher-order moments are uso quantitatively describe the changes in beam shape as a function of current, and a correlation between the kurtosis and M 2 is observed.
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Current address: Spire Corporation, Bedford, MA 01730, USA.
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Tatum, J.A., Staszewski, R., Macfarlane, D.L. et al. Beam quality of high-power broad-area visible diode lasers. Optical and Quantum Electronics 26, 911–928 (1994). https://doi.org/10.1007/BF00340558
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DOI: https://doi.org/10.1007/BF00340558