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Applied Optics

Applied Optics


  • Vol. 43, Iss. 13 — May. 1, 2004
  • pp: 2760–2766

High power density beam from narrow diode-laser arrays in axial symmetry

Taito Alahautala, Erkki Lassila, and Rolf Hernberg  »View Author Affiliations

Applied Optics, Vol. 43, Issue 13, pp. 2760-2766 (2004)

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A multiplexing method based on narrow diode-laser arrays (DLAs) in an axially symmetric configuration is described. The use of submillimeter narrow DLAs improves beam quality considerably in the slow-axis direction compared with typical 1-cm-wide DLAs. The axially symmetric geometry is advantageous for efficient spatial, wavelength, and polarization multiplexing. With narrow DLAs and an axially symmetric geometry, a small circular focus with more than 10-kW/mm2 average power density is possible. Theoretical calculations and preliminary experimental results are presented.

© 2004 Optical Society of America

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3390) Lasers and laser optics : Laser materials processing

Original Manuscript: September 3, 2003
Revised Manuscript: December 30, 2003
Published: May 1, 2004

Taito Alahautala, Erkki Lassila, and Rolf Hernberg, "High power density beam from narrow diode-laser arrays in axial symmetry," Appl. Opt. 43, 2760-2766 (2004)

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