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Time-resolved measurements using femtosecond laser pulses

Aim: To measure transient material properties (e.g. charge carrier lifetime or phonon decoherence) on a sub-picosecond time-scale Approach: Detection of the response of a sample as a function of delay time between two (pump-probe) or more (e.g. four-wave-mixing) incident laser pulses Impact: Picosecond time-resolution provides information that is usually averaged out in other measurement techniques.


overlap Frequency-doubled light of three infrared femtosecond laser pulses, generated in a DAST crystal. Left panel: No temporal overlap. Right panel: All pulses arrive at the same time; each pair of beams creates a visible spot between the individual ones (non-collinear second harmonic generation).

People involved: Brunner, Schneider


last change: 2006/04/13 by webmaster
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