|Title||Two-color facility based on a broadly tunable infrared free-electron laser and a subpicosecond-synchronized 10-fs-Ti : Sapphire laser|
|Publication Type||Journal Article|
|Year of Publication||1998|
|Authors||G.M.H. Knippels, M.J. van de Pol, H.PM Pellemans, P.CM Planken, A.FG van der Meer|
|Date Published||Nov 15|
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; 4.2-300 mu m) 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 17 mu m is used as the pump, and a synchronized Ti:sapphire laser pulse serves as the probe. (C) 1998 Optical Society of America.
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