Two-color reduced-Doppler ion imaging

Cunshun Huang, Wen Li, Myung Hwa Kim, Arthur G. Suits

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16 Scopus citations


We demonstrate a two-color reduced-Doppler probe for ion imaging that, in many applications, offers advantages over conventional 2+1 resonance-enhanced multiphoton ionization detection. Using counterpropagating beams of two different colors, one of which is broadband 266 nm, we achieve convenient and sensitive D atom detection without the need for Doppler scanning. We demonstrate the approach using 224 nm photodissociation of DBr. This method improves the sensitivity and signal-to-noise ratio and presents advantages and opportunities for use in the other systems.

Original languageEnglish
Article number121101
JournalJournal of Chemical Physics
Issue number12
StatePublished - 2006

Bibliographical note

Funding Information:
The authors would like to thank Sridhar Lahankar and Bailin Zhang for assistance with the experiment. This work was supported by the Director, Office of Science, Office and of Basic Energy Science, Division of Chemical Science, and Geoscience and Bioscience, of the U.S. Department of Energy under contract number DE-FG02-04ER15593.


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