Compression of tunable broadband mid-IR pulses with a deformable mirror pulse shaper

Madhumitha Balasubramanian, Trevor L. Courtney, James D. Gaynor, Munira Khalil*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


To improve the utility of ultrafast infrared spectroscopy experiments, we have developed and actively compressed a tunable broadband mid-IR (BBIR) source. The octave-spanning BBIR source is generated by a filamentation process of 800 and 400 nm pulses in a pressurized gas cell. To correct the higher-order dispersion effects in BBIR pulses, we have introduced a deformable mirror grating compressor, which uses an iterative genetic algorithm with optical feedback. Compression yields nearly transform-limited BBIR pulses of 21 fs, or ∼1.4 optical cycles at the center frequency, as measured by cross-correlation frequency resolved optical gating.

Original languageEnglish (US)
Pages (from-to)2033-2037
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Issue number10
StatePublished - Oct 1 2016

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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