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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 15 — May. 20, 2007
  • pp: 2990–2995

Raman shifter optimized for lidar at a 1.5 μm wavelength

Scott M. Spuler and Shane D. Mayor  »View Author Affiliations


Applied Optics, Vol. 46, Issue 15, pp. 2990-2995 (2007)
http://dx.doi.org/10.1364/AO.46.002990


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Abstract

A Raman shifter is optimized for generating high-energy laser pulses at a 1.54 μ m wavelength. A forward-scattering design is described, including details of the multiple pass and nonfocused optical design, Stokes injection seeding, and internal gas recirculation. First-Stokes conversion efficiencies up to 43%—equivalent to 62% photon conversion efficiency—were measured. Experimental results show output average power in excess of 17.5 W, pulse energies of 350   mJ at 50   Hz , with good beam quality ( M 2 < 6 ) . Narrow bandwidth and tunable output is produced when pumping with a single longitudinal mode Nd:YAG laser and seeding the process with a Stokes wavelength narrowband laser diode.

© 2007 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(140.3550) Lasers and laser optics : Lasers, Raman
(280.1100) Remote sensing and sensors : Aerosol detection
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.3640) Remote sensing and sensors : Lidar

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 4, 2006
Manuscript Accepted: December 23, 2006
Published: May 1, 2007

Citation
Scott M. Spuler and Shane D. Mayor, "Raman shifter optimized for lidar at a 1.5 μm wavelength," Appl. Opt. 46, 2990-2995 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-15-2990

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