Abstract

A simple, small, and low-resolution confocal Fabry-Perot interferometer (CFP) has been developed to improve the signal-to-noise ratio (S/N) in forward degenerate four-wave mixing (F-D4WM) detection, coupled to high-performance liquid chromatography (HPLC). Its appropriateness is based on the difference in coherence between the F-D4WM signal and the background stray light. A detailed description of the specially designed CFP and its performance is presented. The improvement in S/N was calculated from the chromatographic peaks recorded after an HPLC separation of 1- and 2-aminoanthraquinone. The concentration limit of detection (LOD) was improved by a factor of 30; for 1-aminoanthraquinone it was 2 X 10 -8 M injected (corresponding to about 3 X 10 -9M in the detector cell), which is quite favorable in view of its low molar extinction coefficient being 2000 M -1cm -1 at the utilized laser wavelength (514.5 nm).

Nearly degenerate four-wave mixing in Fabry–Perot semiconductor lasers

Shijun Jiang and Mario Dagenais
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Phase conjugation by degenerate forward four-wave mixing

A. Khyzniak, V. Kondilenko, Yu. Kucherov, S. Lesnik, S. Odoulov, and M. Soskin
J. Opt. Soc. Am. A 1(2) 169-175 (1984)

Detection of CN by degenerate four-wave mixing

Shang J. Tsay, Kevin G. Owens, Kenneth W. Aniolek, David L. Miller, and Nicholas P. Cernansky
Opt. Lett. 20(16) 1725-1727 (1995)

Complete cancellation of noise by means of color-locking in nearly degenerate, four-wave mixing of noisy light

Tanner F. Schulz, Pye Phyo Aung, Lindsay Weisel, Krista Cosert, M. W. Gealy, and Darin J. Ulness
J. Opt. Soc. Am. B 22(5) 1052-1061 (2005)

Phase-matched gratings for enhanced forward degenerate four-wave mixing

E. Giorgetti, P. Lambkin, Qu Li, L. Palchetti, S. Sottini, D. Grando, and W. Blau
J. Opt. Soc. Am. B 12(1) 58-66 (1995)