|Title||Generation and complete electric-field characterization of intense ultrashort tunable far-infrared laser pulses|
|Publication Type||Journal Article|
|Year of Publication||1999|
|Authors||G.M.H. Knippels, X. Yan, A.M MacLeod, W.A Gillespie, M. Yasumoto, D. Oepts, A.FG van der Meer|
|Journal||Physical Review Letters|
|Date Published||Aug 23|
Intense rapidly tunable picosecond laser pulses have been generated in the far infrared from 30 to 250 mu m, a range not well covered by other sources. The transform-limited, diffraction-limited pulses have energies of up to 17 mu J, peak powers of more than 1 MW, a length of only 18 optical periods, and focused intensities of 0.1 GW/cm(2). Measurements of both the optical field amplitude and the phase have been performed at 150 mu m with a rapid-scanning cross-correlation technique probing the field-induced birefringence in ZnTe with a 10-fs Ti:sapphire laser. The far-infrared laser opens up the exciting possibility of performing nonlinear experiments in a relatively unexplored spectral range.
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