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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 6 — Mar. 15, 2010
  • pp: 5974–5983

High-speed asynchronous optical sampling with sub-50fs time resolution

R. Gebs, G. Klatt, C. Janke, T. Dekorsy, and A. Bartels  »View Author Affiliations

Optics Express, Vol. 18, Issue 6, pp. 5974-5983 (2010)

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We report an ultrafast time-domain spectroscopy system based on high-speed asynchronous optical sampling operating without mechanical scanner. The system uses two 1 GHz femtosecond oscillators that are offset-stabilized using high-bandwidth feedback electronics operating at the tenth repetition rate harmonics. Definition of the offset frequency, i.e. the time-delay scan rate, in the range of a few kilohertz is accomplished using direct-digital-synthesis electronics for the first time. The time-resolution of the system over the full available 1 ns time-delay window is determined by the laser pulse duration and is 45 fs. This represents a three-fold improvement compared to previous approaches where timing jitter was the limiting factor. Two showcase experiments are presented to verify the high time-resolution and sensitivity of the system.

© 2010 OSA

OCIS Codes
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(320.7150) Ultrafast optics : Ultrafast spectroscopy
(340.7470) X-ray optics : X-ray mirrors
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:

Original Manuscript: January 21, 2010
Revised Manuscript: March 4, 2010
Manuscript Accepted: March 4, 2010
Published: March 10, 2010

R. Gebs, G. Klatt, C. Janke, T. Dekorsy, and A. Bartels, "High-speed asynchronous optical sampling with sub-50fs time resolution," Opt. Express 18, 5974-5983 (2010)

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