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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 49, Iss. 7 — Mar. 1, 2010
  • pp: 1151–1157

Photon-trap spectroscopy applied to molecules adsorbed on a solid surface: probing with a standing wave versus a propagating wave

Kazuhiro Egashira, Akira Terasaki, and Tamotsu Kondow  »View Author Affiliations


Applied Optics, Vol. 49, Issue 7, pp. 1151-1157 (2010)
http://dx.doi.org/10.1364/AO.49.001151


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Abstract

We apply photon-trap spectroscopy, a generalized scheme of cavity ringdown spectroscopy, to infrared spectroscopy of molecular adsorbates on a solid substrate. The storage lifetime of light in a high-finesse Fabry–Perot cavity provides a high absorbance sensitivity for the substrate sample, which is placed exactly normal to the light beam in the cavity to minimize optical losses. Infrared spectra of the C–H stretching vibration of alkylsiloxane monolayer films on a silicon substrate are measured in three ways, namely by employing pulsed and continuous-wave lasers as well as by conventional Fourier transform infrared spectroscopy. The magnitude of optical absorption is shown to vary by the character of the interacting light used in the measurement, i.e., a standing wave versus a propagating wave.

© 2010 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.1030) Spectroscopy : Absorption
(300.6250) Spectroscopy : Spectroscopy, condensed matter

ToC Category:
Spectroscopy

History
Original Manuscript: October 5, 2009
Revised Manuscript: January 21, 2010
Manuscript Accepted: January 22, 2010
Published: February 25, 2010

Citation
Kazuhiro Egashira, Akira Terasaki, and Tamotsu Kondow, "Photon-trap spectroscopy applied to molecules adsorbed on a solid surface: probing with a standing wave versus a propagating wave," Appl. Opt. 49, 1151-1157 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-7-1151

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