Mode-Area Scaling of Helical-Core, Dual-Clad Fiber Lasers and Amplifiers Using an Improved Bend-Loss Model

Journal Article · Thu Sep 28 00:00:00 EDT 2006 · Journal of the Optical Society of America B

DOI:https://doi.org/10.1364/JOSAB.23.002051· OSTI ID:892220

Jiang, Z; Marciante, J R

For small-bend radii, the waveguide condition for total internal reflection is violated in a large angular spread of incident angles at the interface of the fiber core. To account for this, we derived an improved semi-analytic bend-loss model that allows for the propagation of radiated fields outside the plane of the fiber bend. This new model is applied to large-mode-area helical-core fibers (which require small-bend radii) for use as high-power fiber lasers and amplifiers. In particular, the limits of scaling the mode area while maintaining good beam quality are explored.

• Research Organization: Univ. of Rochester, NY (United States). Lab. for Laser Energetics
• Sponsoring Organization: USDOE
• DOE Contract Number: FC52-92SF19460
• OSTI ID: 892220
• Report Number(s): DOE/SF/19460-701; 1663; 2005-171; TRN: US200721%%666
• Journal Information: Journal of the Optical Society of America B, Vol. 23, Issue 10
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
AMPLIFIERS
LASERS
DESIGN
MATHEMATICAL MODELS
REFLECTION
WAVEGUIDES