Stable and high-power few cycle supercontinuum for 2D ultrabroadband electronic spectroscopy

Boris Spokoyny, Christine J. Koh, Elad Harel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Broadband supercontinuum (SC) pulses in the few cycle regime are a promising source for spectroscopic and imaging applications. However, SC sources are plagued by poor stability, greatly limiting their utility in phase-resolved nonlinear experiments such as 2D photon echo spectroscopy (2D PES). Here, we generated SC by two-stage filamentation in argon and air starting from 100 fs input pulses, which are sufficiently high-power and stable to record timeresolved 2D PE spectra in a single laser shot. We obtain a total power of 400 μJ/pulse in the visible spectral range of 500-850 nm and, after compression, yield pulses with duration of 6 fs according to transient-grating frequency-resolved optical gating (TG-FROG) measurements. We demonstrate the method on the laser dye, Cresyl Violet, and observe coherent oscillations indicative of nuclear wavepacket dynamics.

Original languageEnglish (US)
Pages (from-to)1014-1017
Number of pages4
JournalOptics Letters
Issue number6
StatePublished - Mar 15 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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