Nonlinear Absorption and Carrier Dynamics in Slab-Coupled Optical Waveguide Amplifiers

Ali R. Motamedi; Erich P. Ippen; Jason J. Plant; Joseph P. Donnelly; Paul W. Juodawlkis

doi:10.1364/CLEO.2009.CMBB5

Conference on Lasers and Electro-Optics/International Quantum Electronics Conference
OSA Technical Digest (CD) (Optica Publishing Group, 2009),
paper CMBB5
•https://doi.org/10.1364/CLEO.2009.CMBB5

Nonlinear Absorption and Carrier Dynamics in Slab-Coupled Optical Waveguide Amplifiers

Ali R. Motamedi, Erich P. Ippen, Jason J. Plant, Joseph P. Donnelly, and Paul W. Juodawlkis

Conference on Lasers and Electro-Optics 2009

Baltimore, Maryland United States
31 May–5 June 2009
ISBN: 978-1-55752-869-8

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A. R. Motamedi, E. P. Ippen, J. J. Plant, J. P. Donnelly, and P. W. Juodawlkis, "Nonlinear Absorption and Carrier Dynamics in Slab-Coupled Optical Waveguide Amplifiers," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper CMBB5.

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Abstract

Limitations imposed on the saturation energy of high-power slab-coupled optical waveguide amplifiers were studied for pulsed signal transmission. Loss due to the two-photon absorption and free-carrier absorption processes becomes a dominant factor for ultrashort-pulse amplification, leading to lower saturation energy. TPA and FCA coefficients are measured to be 65cm/GW and 7×10⁻¹⁷ cm², respectively. Carrier-related gain recovery times vary from 160ps to 380ps at bias currents from 4A to 1A, respectively.

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