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Direct Observation ofOptical Precursors ina Region ofAnomalous Dispersion

Heejeong Jeong

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

We observe thecreation ofoptical precursors whenastep-modulated optical pulse propagates through alinear resonant absorber. Theprecursors arethedominant part ofthe transmitted field, displaying 100%transmission attheir maximum amplitude. ©2005Optical Society ofAmerica OCIScodes: (190.5530) Pulse propagation andsolitons; (270.1670) Coherent optical effects

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Direct Observation of Optical Precursors in a Region of Anomalous Dispersion

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Abstract: We observe the creation of optical precursors when a step-modulated optical pulse propagates through a linear resonant absorber. The precursors are the dominant part of the transmitted field, displaying 100 % transmission at their maximum amplitude. 2005 Optical Society of America OCIS codes: (190.5530) Pulse propagation and solitons; (270.1670) Coherent optical effects 1.

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Physical Review Letters•Apr 12, 2006•113 citations
We observe thecreation ofoptical precursors whenastep-modulated optical pulse propagates through alinear resonant absorber. Theprecursors arethedominant part ofthe transmitted field, displaying 100%transmission attheir maximum amplitude. ©2005Optical Society ofAmerica OCIScodes: (190.5530) Pulse propagation andsolitons; (270.1670) Coherent optical effects
We create optical precursors by propagating a step-modulated optical pulse through a linear resonant dielectric absorber. The field emerging from the dielectric consists of a several-nanosecond-long spike with near 100% transmission, which decays to a constant value expected from Beer's law. This high-transmission spike might be useful for imaging applications requiring penetrating optical radiation. We compare our observations to two different theories, revealing that the spike consists of both the Sommerfeld and Brillouin precursors.