Single-mode operation of a coiled multimode fiber amplifier [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 2000.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 12 pages : digital, PDF file
- Additional Creators
- Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The authors report a new approach to obtain single-transverse-mode operation of a multimode fiber amplifier, in which the gain fiber is coiled to induce significant bend loss for all but the lowest-order mode. They have demonstrated this method by constructing a coiled amplifier using Yb-doped, double-clad fiber with a core diameter of 25 {micro}m and NA of −0.1 (V ≈ 7.4). When operated as an ASE source, the output beam had an M² value of 1.09 ± 0.09; when seeded at 1,064 nm, the slope efficiency was similar to that of an uncoiled amplifier. This technique does not require exotic fiber designs or increase system complexity and is inexpensive to implement. It will allow scaling of pulsed fiber lasers and amplifiers to significantly higher pulse energies and peak powers and cw fiber sources to higher average powers while maintaining excellent beam quality.
- Report Numbers
- E 1.99:sand2000-8522j
sand2000-8522j - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
01/19/2000.
"sand2000-8522j"
"ISSN 0146-9592"
Optics Letters FT
Jeffrey P. Koplow; Lew Goldberg; Dahv A. V. Kliner. - Funding Information
- AC04-94AL85000
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