Abstract
Resonant degenerate four-wave mixing is demonstrated for the detection of HF using both the (1-0) and (3-0) vibrational transitions near 4000 and 11500 cm-1, respectively. The use of rovibrational transitions in DFWM potentially allows the sensitive detection of molecules with otherwise inaccessible electronic states. In addition, high temporal and spatial resolution is obtained by using a pulsed laser with a crossed-beam geometry. High detection sensitivities of > 1010 molecule/cm3 were achieved using the HF (1-0) transition for resonance enhancement. Detection using the HF (3-0) transition was only possible at pressures greater than ≈ 1 Torr, where the DFWM interaction is dominated by a thermal grating mechanism.
Original language | English (US) |
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Pages (from-to) | 251-258 |
Number of pages | 8 |
Journal | Chemical Physics Letters |
Volume | 191 |
Issue number | 3-4 |
DOIs | |
State | Published - Apr 3 1992 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
- Physical and Theoretical Chemistry