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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 16 — Aug. 2, 2010
  • pp: 16526–16538

Complex-field measurement of ultrafast dynamic optical waveforms based on real-time spectral interferometry

Mohammad H. Asghari, Yongwoo Park, and José Azaña  »View Author Affiliations

Optics Express, Vol. 18, Issue 16, pp. 16526-16538 (2010)

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Several methods are now available for single-shot measurement of the complex field (amplitude and phase profiles) of optical waveforms with resolutions down to the sub-picosecond range. As a main critical limitation, all these techniques exhibit measurement update rates typically slower than a few Hz. It would be very challenging to directly upgrade the update rate of any of these available methods beyond a few kHz. By combining spectral interferometry with dispersion-induced real-time optical Fourier transformation, here we demonstrate single-shot complex-field measurements of optical waveforms with a resolution of ~400 fs over a record length as long as ~350 ps, corresponding to a large record-length-to-resolution ratio of ~900. This performance is achieved at a measurement update rate of ~17 MHz, i.e. at least one thousand times faster than with any previous single-shot complex-field THz-bandwidth optical signal characterization method.

© 2010 OSA

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(200.4740) Optics in computing : Optical processing
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: May 21, 2010
Revised Manuscript: June 23, 2010
Manuscript Accepted: June 24, 2010
Published: July 22, 2010

Mohammad H. Asghari, Yongwoo Park, and José Azaña, "Complex-field measurement of ultrafast dynamic optical waveforms based on real-time spectral interferometry," Opt. Express 18, 16526-16538 (2010)

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