Vibrational Population Control in Liquid-Phase Metal Carbonyls

Published

June 1, 2002

Author(s)

V D. Kleiman, Joseph S. Melinger, Edwin J. Heilweil

Abstract

Broadband picosecond and femtosecond mid-infrared chirped-pulse excitation with broadband probe techniques are being explored at NIST using multi-element, mid-infrared focal plane array detectors. Ultrafast infrared chirped IR pulse generation, detection and pump-probe spectroscopy schemes are reviewed. These methods are used to coherently control and probe vibrational overtone populations and the results modeled with a adiabatic Block equations. Coherent control of the T₁₀ Co-stretching vibrational overtone population distributions for tungsten-hexacarbonlyl in room temperature n-hexane using deliberately chirped mid-IR excitation pulses is reported. Negatively chirped picosecond IR excitaiton pulses enhance v=2 population while intense femtosecond pulses produce only v=1 excitation.

Proceedings Title

Femtochemistry and Femtobiology, Conference | | Femtochemistry and Femtobiology: Ultrafast Dynamics in Molecular Science | World Scientific Publishing

Conference Dates

September 1, 2001

Conference Location

Toldeo, 1, SP

Conference Title

Femtochemistry Femtobiology

Pub Type

Conferences

Keywords

broadband defection, chirped infrared pulses, coherent vibrational control, condensed phase, metal hexacarbonyls, overtone up-pumping, ultrashort infrared, vibrational control, vibrational population

Citation

Kleiman, V. , Melinger, J. and Heilweil, E. (2002), Vibrational Population Control in Liquid-Phase Metal Carbonyls, Femtochemistry and Femtobiology, Conference | | Femtochemistry and Femtobiology: Ultrafast Dynamics in Molecular Science | World Scientific Publishing, Toldeo, 1, SP (Accessed April 26, 2024)