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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 20 — Oct. 15, 2006
  • pp: 3049–3051

Temporal resolution limits of time-to-frequency transformations

Carlos R. Fernández-Pousa  »View Author Affiliations

Optics Letters, Vol. 31, Issue 20, pp. 3049-3051 (2006)

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Time-to-frequency converters are devices that transfer the intensity of a light pulse to its spectrum. The two architectures of these converters are studied: a dispersive line followed by a phase modulator and a single time lens operating in the spectral Fraunhofer regime. These two configurations are shown not to be equivalent in general: the first one provides an incoherent time-to-frequency mapping, whereas the second depends on the degree of coherence of the pulse. In this case, the recorded spectrum is the intensity of a partially coherent residually dispersed pulse, and the spectral Fraunhofer condition is the requirement of negligible residual dispersion. Converters operated outside the spectral Fraunhofer limit can achieve a subpicosecond resolution with moderate time-lens phase factors. Their use for pulse characterization is briefly analyzed.

© 2006 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(070.2590) Fourier optics and signal processing : ABCD transforms
(250.5530) Optoelectronics : Pulse propagation and temporal solitons
(320.5550) Ultrafast optics : Pulses
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: June 12, 2006
Revised Manuscript: July 19, 2006
Manuscript Accepted: July 20, 2006
Published: September 25, 2006

Carlos R. Fernández-Pousa, "Temporal resolution limits of time-to-frequency transformations," Opt. Lett. 31, 3049-3051 (2006)

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