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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 22 — Nov. 15, 1998
  • pp: 1754–1756

Two-color facility based on a broadly tunable infrared free-electron laser and a subpicosecond-synchronized 10-fs-Ti:sapphire laser

G. M. H. Knippels, M. J. van de Pol, H. P. M. Pellemans, P. C. M. Planken, and A. F. G. van der Meer  »View Author Affiliations


Optics Letters, Vol. 23, Issue 22, pp. 1754-1756 (1998)
http://dx.doi.org/10.1364/OL.23.001754


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Abstract

Subpicosecond synchronization between a mirror-dispersion-controlled 10-fs Ti:sapphire laser and the Free-Electron Laser for Infrared Experiments has been achieved. The measured intensity cross correlation between the two lasers is consistent with a jitter of only 400 fs rms. The wide and continuous tunability of the free-electron laser (FEL; 4.2–300μm) combined with ultrashort pulse duration of six optical cycles and high pulse energy of several tens of microjoules makes a series of two-color experiments possible in a previously inaccessible wavelength range. We demonstrate these capabilities by performing a two-color pump–probe experiment to study carrier cooling in GaAs. A FEL tuned from 8 to 17μm is used as the pump, and a synchronized Ti:sapphire laser pulse serves as the probe.

© 1998 of America

OCIS Codes
(140.2600) Lasers and laser optics : Free-electron lasers (FELs)
(140.7090) Lasers and laser optics : Ultrafast lasers
(260.3090) Physical optics : Infrared, far
(300.6270) Spectroscopy : Spectroscopy, far infrared
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(320.7160) Ultrafast optics : Ultrafast technology

Citation
G. M. H. Knippels, M. J. van de Pol, H. P. M. Pellemans, P. C. M. Planken, and A. F. G. van der Meer, "Two-color facility based on a broadly tunable infrared free-electron laser and a subpicosecond-synchronized 10-fs-Ti:sapphire laser," Opt. Lett. 23, 1754-1756 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-22-1754

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