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 language | English (US) |
|---|---|
| Pages (from-to) | 1796-1798 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 22 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 1 1997 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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