Ultrashort-pulse fiber ring lasers

TitleUltrashort-pulse fiber ring lasers
Publication TypeJournal Article
Year of Publication1997
AuthorsNelson, LE, D. J. Jones, K. Tamura, HA Haus, and EP Ippen
JournalApplied Physics B-Lasers and Optics
Volume65
Issue2
Pagination277 - 294
Date Published1997/08//
ISBN Number0946-2171
Keywords1.55 mu-m, average soliton, continuous-wave oscillation, erbium-doped fiber, Mode-locked lasers, noise characterization, optical pulses, saturable absorber, self-phase modulation, soliton laser
AbstractThis paper reviews recent progress on ultrashort pulse generation with erbium-doped fiber ring lasers. The passive mode-locking technique of polarization additive pulse mode-locking (P-APM) is used to generate stable, self-starting, sub-500 fs pulses at the fundamental repetition rate from a unidirectional fiber ring laser operating in the soliton regime. Saturation of the APM, spectral sideband generation, and intracavity filtering are discussed. Harmonic mode-locking of fiber ring lasers with soliton pulse compression is addressed, and stability regions for the solitons are mapped and compared with theoretical predictions. The stretched-pulse laser, which incorporates segments of positive- and negative-dispersion fiber into the P-APM fiber ring, generates shorter (sub-100 fs) pulses with broader bandwidths (> 65 nm) and higher pulse energies (up to 2.7 nJ). We discuss optimization of the net dispersion of the stretched-pulse laser, use of the APM rejection port as the laser output port, and frequency doubling for amplifier seed applications. We also review the analytical theory of the stretched-pulse laser as well as discuss the excellent noise characteristics of both the soliton and stretched-pulse lasers.
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