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Index and gain dynamics of optically-pumped GaInNAs vertical-cavity semiconductor optical amplifiers

Laurand, N. and Calvez, S. and Dawson, M.D. and Kelly, A.E. (2005) Index and gain dynamics of optically-pumped GaInNAs vertical-cavity semiconductor optical amplifiers. Applied Physics Letters, 87 (231115). 231115-1-231115-3. ISSN 0003-6951

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Abstract

To study the dynamic effects in GaInNAs vertical-cavity semiconductor amplifiers (VCSOAs), we carried out a pump-probe experiment on an optically biased VCSOA, first at antiresonance and then in gain. At antiresonance, the highest absorption region of the amplifier, the carrier-population-depletion-induced shift in the wavelength of the absorption was measured as a function of pump-probe delay. The corresponding index recovery time was measured to be ~50 ps±5 ps. In the amplification regime, we observed that the carrier depletion induced by the pump pulse decreased the available gain. The recovery time for the device gain in dB under these conditions was measured at ~55±15 ps. These results indicate that GaInNAs VCSOAs can process data at 10 Gbits/s with no patterning effect.

Item type: Article
ID code: 4866
Keywords: index dynamics, gain dynamics, GaInNAs, vertical-cavity, semiconductors, optical amplifiers, applied physics, Optics. Light, Physics and Astronomy (miscellaneous)
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Institute of Photonics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 19 Jan 2008
    Last modified: 04 Sep 2014 16:53
    URI: http://strathprints.strath.ac.uk/id/eprint/4866

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