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Opt Express. 2009 Mar 2;17(5):3381-9.

Optical arbitrary waveform characterization via dual-quadrature spectral shearing interferometry.

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1
School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, USA.

Abstract

We demonstrate a new dual-quadrature spectral shearing interferometry technique appropriate for spectral phase characterization of arbitrary optical waveforms generated by line-by-line shaping of high-repetition- rate (approximately 10 GHz) optical frequency combs. Spectral shearing interferograms are generated through sum-frequency mixing of the frequency comb field with a pair of reference tones generated via intensity modulation of a continuous-wave laser. Although related to the well known SPIDER method, our approach relaxes spectral resolution requirements and operates in a collinear interaction geometry compatible with the use of high sensitivity, aperiodically poled lithium niobate nonlinear waveguide devices.

PMID:
19259175
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