Intuitive analysis of space-time focusing with double-ABCD calculation

We analyze the structure of space-time focusing of spatially-chirped pulses using a technique where each frequency component of the beam follows its own Gaussian beamlet that in turn travels as a ray through the system. The approach leads to analytic expressions for the axially-varying pulse duratio...

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Detalles Bibliográficos
Autores principales: Durfee, Charles G., Greco, Michael, Block, Erica, Vitek, Dawn, Squier, Jeff A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Optical Society of America 2012
Materias:
Research-Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482919/
https://www.ncbi.nlm.nih.gov/pubmed/22714487
http://dx.doi.org/10.1364/OE.20.014244
Descripción
Sumario:We analyze the structure of space-time focusing of spatially-chirped pulses using a technique where each frequency component of the beam follows its own Gaussian beamlet that in turn travels as a ray through the system. The approach leads to analytic expressions for the axially-varying pulse duration, pulse-front tilt, and the longitudinal intensity profile. We find that an important contribution to the intensity localization obtained with spatial-chirp focusing arises from the evolution of the geometric phase of the beamlets.

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