Theoretical analysis of optical fiber laser amplifiers and oscillators

Journal Article · Fri Feb 01 04:00:00 EST 1985 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.24.000333· OSTI ID:6054442

Digonnet, M J.F.; Gaeta, C J

Using the formalism of mode overlap, a theoretical analysis of optically pumped fiber laser amplifiers and oscillators is developed. The concept of normalized overlap coefficients is introduced to account for the effects of the transverse structure of the interacting signal and pump modes on the device characteristics. Simple and accurate closed-form expressions are derived for the gain of fiber amplifiers and the threshold and energy conversion efficiency of fiber laser oscillators in terms of the fiber and laser material parameters and the pump and signal modes. When applied to step-index Nd:YAG fiber lasers, this study predicts optimum fundamental mode oscillation in fibers with a V number of 5-25 with submilliwatt thresholds and nearly quantum-limited conversion efficiencies.

• Research Organization: Stanford University, Hansen Laboratories of Physics, Ginzton Laboratory, Stanford, California 94305
• OSTI ID: 6054442
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 24:3; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
AMPLIFIERS
CONFIGURATION
DESIGN
EFFICIENCY
ELECTRONIC EQUIPMENT
EQUIPMENT
FIBER OPTICS
FIBERS
GAIN
GEOMETRY
LASER CAVITIES
LASERS
MATHEMATICS
NEODYMIUM LASERS
OPTICAL FIBERS
OPTICAL MODES
OPTICAL PROPERTIES
OPTICAL PUMPING
OSCILLATION MODES
OSCILLATORS
PHYSICAL PROPERTIES
POWER AMPLIFIERS
PUMPING
REFRACTIVITY
SOLID STATE LASERS