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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 24 — Dec. 15, 2012
  • pp: 5205–5207

Apodized holographic beam combiners for dense wavelength multiplexing based on Gaussian-beam interference

Sebastian Nippgen, Stefan Hengesbach, Martin Traub, and Dieter Hoffmann  »View Author Affiliations

Optics Letters, Vol. 37, Issue 24, pp. 5205-5207 (2012)

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The brightness of high-power diode-laser systems can be significantly increased by using dense wavelength-multiplexing technologies. Among these technologies, state-of-the-art volume holographic gratings (VHGs) are suitable wavelength-selective filters for scaling the power of frequency-stabilized high-power lasers. The frequency spacing is limited due to the sidelobes of the spectral filter characteristic. In this Letter, we present the simulation results of novel apodized VHGs produced by Gaussian-beam interference. Apodized VHGs offer increased sidelobe suppression of up to 22 dB with conventional grating dimensions and, moreover, will improve the spectral brightness of dense wavelength-multiplexing systems by a factor of approximately six.

© 2012 Optical Society of America

OCIS Codes
(090.1970) Holography : Diffractive optics
(090.7330) Holography : Volume gratings
(140.3460) Lasers and laser optics : Lasers
(140.5960) Lasers and laser optics : Semiconductor lasers

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Original Manuscript: September 13, 2012
Revised Manuscript: November 19, 2012
Manuscript Accepted: November 21, 2012
Published: December 13, 2012

Sebastian Nippgen, Stefan Hengesbach, Martin Traub, and Dieter Hoffmann, "Apodized holographic beam combiners for dense wavelength multiplexing based on Gaussian-beam interference," Opt. Lett. 37, 5205-5207 (2012)

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