Heterodyne ultrafast pump-probe experiments, towards acoustic imaging with 1 GHz to 100 GHz spectral range
| dc.contributor.author | ABBAS, Allaoua | |
| hal.structure.identifier | Laboratoire de Mécanique Physique [LMP] | |
| dc.contributor.author | GUILLET, Yannick | |
| dc.contributor.author | AUDOIN, Bertrand | |
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| dc.contributor.author | RAMPNOUX, Jean-Michel | |
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| dc.contributor.author | DILHAIRE, Stefan | |
| dc.contributor.author | CARLIER, Julien | |
| dc.contributor.author | RIGAIL, Pierre | |
| dc.contributor.author | MOTTAY, Eric | |
| dc.contributor.editor | Société Française d'Acoustique | |
| dc.date.issued | 2012-04-23 | |
| dc.date.conference | 2012-04-23 | |
| dc.description.abstractEn | Usual femtosecond pump-probe experiments allow the generation and the detection of acoustic waves in the GHz-THz frequency range for investigation of matter properties at sub-micron scales. The main drawback of these experiments is their acquisition speed limitation due to the use of mechanical delay line. We present a pump-probe heterodyne setup which uses two mode-locked lasers (400 fs FHMW pulses at nearly 50 MHz repetition rate). A controlled frequency shift (100 Hz to 1 KHz) of their repetition rates synthesized by a Phase Locked Loop permits to generate the pump-probe delay and to discard the setup of any mechanical translation stage. An accurate control of the beating frequency is needed to achieve the temporal resolution required to detect high acoustic frequencies. Any fluctuation of this beating frequency induces an uncertainty on the pump-probe delay (jitter) and reduces the system bandwidth. We will expose the metrological method allowing the measurement of this jitter, which turns out to be smaller than 500 fs. This jitter value should permit the detection of waves over a large band spectrum, from few GHz to several hundreds of GHz with a 50 MHz spectral resolution. Experimental pump-probe measurements on different physical systems will highlight this feature. | |
| dc.language.iso | en | |
| dc.source.title | Acoustics 2012 Nantes | |
| dc.title.en | Heterodyne ultrafast pump-probe experiments, towards acoustic imaging with 1 GHz to 100 GHz spectral range | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Sciences de l'ingénieur [physics]/Acoustique [physics.class-ph] | |
| bordeaux.country | FR | |
| bordeaux.title.proceeding | Acoustics 2012 Nantes | |
| bordeaux.conference.city | Nantes | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00811245 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | oui | |
| hal.conference.end | 2012-04-27 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00811245v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Acoustics%202012%20Nantes&rft.date=2012-04-23&rft.au=ABBAS,%20Allaoua&GUILLET,%20Yannick&AUDOIN,%20Bertrand&RAMPNOUX,%20Jean-Michel&DILHAIRE,%20Stefan&rft.genre=unknown |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||