Abstract

Optical excitation followed by ion mass detection in a supersonic molecular beam can offer unusually high levels of selectivity for detection of trace concentrations of material in the atmosphere. We describe recent work involving two-color excitation of aromatic molecules in a supersonic molecular beam, time-of-flight mass spectrometer. It is shown how double resonance excitation in cold molecules can provide two very selective stages of optical selectivity, further augmented by single mass detection. Three applications are described: (1) Two-color excitation to higher excited electronic states is illustrated for final states above and below the ionization potential. (2) Stimulated emission pumping is shown to allow selective identification using ion dip detection. (3) Resonance ion dissociation is demonstrated as a means for obtaining double optical and double mass selectivity.

© 1987 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Ultrasensitive detection of atmospheric constituents by supersonic molecular beam, multiphoton ionization, mass spectroscopy

Jack A. Syage, James E. Pollard, and Ronald B. Cohen
Appl. Opt. 26(17) 3516-3520 (1987)

Standoff trace chemical sensing via manipulation of excited electronic state lifetimes

Fedor Rudakov, Yao Zhang, Xinxin Cheng, and Peter M. Weber
Opt. Lett. 38(21) 4445-4448 (2013)

Multiphoton fragmentation and ionization

M. B. Robin
Appl. Opt. 19(23) 3941-3947 (1980)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription