High-power picosecond mid-infrared optical parametric amplifier for infrared Raman spectroscopy

John C. Deàk, Lawrence K. Iwaki, Dana D. Dlott

Research output: Contribution to journalArticlepeer-review

Abstract

A high-power (50-MW), kilohertz, picosecond, mid-IR optical parametric amplifier that is pumped by an amplified Ti:sapphire laser and also produces a fixed-frequency visible pulse is described. Mid-IR pulse energies of 40-55 μJ with 0.6-0.8-ps durations and 35-cm-1 bandwidths are reported in the 3650-2800-cm-1 range. The combination of picosecond mid-IR and visible pulses is useful for two-color spectroscopies, which require simultaneous time and frequency resolution. To illustrate the above, we present vibrational relaxation data for the polyatomic molecule nitromethane, using time-resolved infrared Raman spectroscopy.

Original languageEnglish (US)
Pages (from-to)1796-1798
Number of pages3
JournalOptics Letters
Volume22
Issue number23
DOIs
StatePublished - Dec 1 1997

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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