Femtosecond pulse shaping directly in the mid-IR using acousto-optic modulation

Sang Hee Shim, David B. Strasfeld, Eric C. Fulmer, Martin T. Zanni

Research output: Contribution to journalArticlepeer-review

134 Citations (Scopus)


Pulse shaping directly in the raid-IR is accomplished by using a germanium acousto-optic modulator (Ge AOM) capable of programmable phase and amplitude modulation for IR light between 2 and 18 μm. Shaped waveforms centered at 4.9 μm are demonstrated in both the frequency and the time domains. With a 50% throughput efficiency, the Ge AOM can generate much more intense pulses with higher resolution than can indirect shaping methods. Furthermore, the phase stability of the shaped pulse proved sufficient for cross correlation with unshaped mid-IR pulses. Thus, phase- and amplitude-tailored pulses can now be readily incorporated into phase-sensitive experiments, such as heterodyned 2D IR spectroscopy.

Original languageEnglish
Pages (from-to)838-840
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2006 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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