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Proceedings Paper

Near-field and complex-field time-stretch transform
Author(s): Peter T. S. DeVore; Brandon W. Buckley; Mohammad H. Asghari; Daniel R. Solli; Bahram Jalali
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Paper Abstract

The time-stretch dispersive Fourier transform enables high-throughput acquisition of optical spectra in single-shot measurements by performing an analog Fourier transform and stretching the signal to facilitate capture with high-speed electronics. The coherent time-stretch transform adds complex-field detection so that spectral amplitude and phase can be measured in the temporal near field, i.e., without a strict dispersion requirement. Full-field spectra are recovered via temporal interferometry on waveforms dispersed in the temporal near field. Real-time absorption spectra including both amplitude and phase information are acquired at 37 MHz.

Paper Details

Date Published: 15 May 2014
PDF: 7 pages
Proc. SPIE 9141, Optical Sensing and Detection III, 91411P (15 May 2014); doi: 10.1117/12.2050979
Show Author Affiliations
Peter T. S. DeVore, Univ. of California, Los Angeles (United States)
Brandon W. Buckley, Univ. of California, Los Angeles (United States)
Mohammad H. Asghari, Univ. of California, Los Angeles (United States)
Daniel R. Solli, Univ. of California, Los Angeles (United States)
Bahram Jalali, Univ. of California, Los Angeles (United States)

Published in SPIE Proceedings Vol. 9141:
Optical Sensing and Detection III
Francis Berghmans; Anna G. Mignani; Piet De Moor, Editor(s)

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