Limiting Nature of Continuum Generation in Silicon

Details Limiting Nature of Continuum Generation in Silicon Limiting Nature of Continuum Generation in Silicon

2008-07-07

arxiv.org/abs/0807.0947v1

Physics

Optics

16 pages, 6 figures

Scientific paper

10.1063/1.2977872

Spectral broadening in silicon is studied numerically as well as experimentally. Temporal dynamics of the free carriers generated during the propagation of optical pulses, through the process of two-photon absorption (TPA), affect the amplitude and phase of the optical pulses, thereby determining the nature and extent of the generated spectral continuum. Experimental results are obtained by propagating pico-second optical pulses in a silicon waveguide for intensities that span two orders of magnitude (1-150 GW/cm2). These results validate the conclusions drawn from numerical simulations that the continuum generation has a self-limiting nature in silicon.

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