We present a novel procedure for vibrationally-resolved sum-frequency generation (SFG) in which a broad-bandwidth IR pulse is mixed with a narrow-bandwidth visible pulse. The resultant SFG spectrum is dispersed with a spectrograph and detected in parallel with a scientific grade CCD detector, enabling rapid and high signal to noise data acquisition over a 400 cm-1 spectral region without scanning the IR frequency.
Citation: Optics Letters
Pub Type: Journals
interface, laser, sum-frequency generation, surface, ultrafast, vibrational spectroscopy