Higher-order modes expand optical fiber amplifier performance

In the case of Er-doped fibers, our focus has been on high-pulse-energy amplification. Because of the large effective areas achievable, higher order modes are ideal for high-peak-power pulses and large pulse energies that are useful in a wide range of applications, including nonlinear optics, microm...

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Bibliographic Details
Published in:Laser focus world 2012-09, Vol.48 (9), p.59-63
Main Authors: Nicholson, Jeffrey, Fini, John, Headley, Clifford, Desantolo, Anthony, Liu, Xiaoping
Format: Magazinearticle
Language:English
Subjects:
Amplifiers
Design
Fiber lasers
Fibers
Integrated approach
Lasers
Micromachining
Nonlinearity
Optical fibers
Remote sensing
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Summary:In the case of Er-doped fibers, our focus has been on high-pulse-energy amplification. Because of the large effective areas achievable, higher order modes are ideal for high-peak-power pulses and large pulse energies that are useful in a wide range of applications, including nonlinear optics, micromachining, laser ranging, and remote sensing. Cladding pumping of Er-doped amplifiers is difficult due to low absorption and lack of ideal pump sources. [...]to pump Er-doped HOM amplifiers, OFS has developed a high-power, 1480 nm singlemode Raman fiber laser with more than 100 W of singlemode CW output, ideal for core-pumping Yb-free, Er-doped fibers.
ISSN:1043-8092