Shot noise limited characterization of ultraweak femtosecond pulse trains

Osip Schwartz, Oren Raz, Ori Katz, Nirit Dudovich, Dan Oron

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Ultrafast science is inherently, due to the lack of fast enough detectors and electronics, based on nonlinear interactions. Typically, however, nonlinear measurements require significant powers and often operate in a limited spectral range. Here we overcome the difficulties of ultraweak ultrafast measurements by precision time-domain localization of spectral components. We utilize this for linear self-referenced characterization of pulse trains having ∼ 1 photon per pulse, a regime in which nonlinear techniques are impractical, at a temporal resolution of ∼ 10 fs. This technique does not only set a new scale of sensitivity in ultrashort pulse characterization, but is also applicable in any spectral range from the near-infrared to the deep UV.

Original languageEnglish
Pages (from-to)679-686
Number of pages8
JournalOptics express
Issue number2
Publication statusPublished - Jan 17 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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