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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 14 — Jul. 15, 2014
  • pp: 4274–4277

Heterodyne-detected and ultrafast time-resolved second-harmonic generation for sensitive measurements of charge transfer

Daniel E. Wilcox, Matthew E. Sykes, Andrew Niedringhaus, Max Shtein, and Jennifer P. Ogilvie  »View Author Affiliations

Optics Letters, Vol. 39, Issue 14, pp. 4274-4277 (2014)

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In organic photovoltaics many key ultrafast processes occur at the interface between electron donor and acceptor molecules. Traditional ultrafast spectroscopies, such as pump–probe or time-resolved fluorescence, are not ideal for studying the interface because most of their signal is from the bulk material. Time-resolved second-harmonic generation (TRSHG) spectroscopy solves this problem by only generating signal from the interface. We demonstrate an optically heterodyned TRSHG to reduce the impact of stray light, enhance sensitivity, and detect the full complex signal field.

© 2014 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(240.6490) Optics at surfaces : Spectroscopy, surface
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6490) Spectroscopy : Spectroscopy, surface
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(240.1485) Optics at surfaces : Buried interfaces

ToC Category:

Original Manuscript: May 14, 2014
Revised Manuscript: June 13, 2014
Manuscript Accepted: June 13, 2014
Published: July 15, 2014

Daniel E. Wilcox, Matthew E. Sykes, Andrew Niedringhaus, Max Shtein, and Jennifer P. Ogilvie, "Heterodyne-detected and ultrafast time-resolved second-harmonic generation for sensitive measurements of charge transfer," Opt. Lett. 39, 4274-4277 (2014)

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