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Time-resolved measurements on reflectivity of an ultrafast laser-induced plasma mirror
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10.1063/1.3247865
/content/aip/journal/pop/16/10/10.1063/1.3247865
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/10/10.1063/1.3247865
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup. A calorimeter is placed behind a beam splitter to measure the time-integrated reflectivity of the PM. A spectrometer is used to measure the time-resolved reflectivity of the PM.

Image of FIG. 2.
FIG. 2.

Temporal profile of the laser pulse in a time scale of 300 ps measured by a third-order autocorrelation device. The contrast ratio is around 300 ps and around 2 ps before the main pulse arrives. Inset: the temporal profile in a time scale of 20 ps.

Image of FIG. 3.
FIG. 3.

(a) Reflected spectra of 500 fs linearly chirped pulses on an AR-coating plate target for different laser intensities from to . The intensity is normalized by , where is the incident peak intensity of the incident laser pulse, and is the cold reflectivity of AR-coated target. The laser spectrum with a peak intensity of 1 is also shown for comparison with the reflected spectra. (b) Time-resolved reflectivity calculated from (a) by .

Image of FIG. 4.
FIG. 4.

(a) Reflected spectra of 500 fs linearly chirped pulses on an AR-coating plate target, for different laser intensities from to . The intensity is normalized by the peak intensity of the incident laser pulse. (b) Time-resolved reflectivity calculated from (a) by .

Image of FIG. 5.
FIG. 5.

The rise time of the reflectivity as a function of laser intensity, which is calculated from the measured data, as shown in Figs. 3(b) and 4(b).

Image of FIG. 6.
FIG. 6.

Temporal profile of the reflected laser pulse in comparison with the incident pulse, calculated by the temporal profile of incident laser pulse and the time-varying reflectivity of the PM at . Contrast ratio improvement of near two orders of magnitude is seen for the delay time before the main pulse arrives.

Image of FIG. 7.
FIG. 7.

Time-integrated reflectivity for -polarized (a) and -polarized (b) laser pulses as functions of the incident intensity for different pulse durations of 60 and 500 fs.

Image of FIG. 8.
FIG. 8.

Time-integrated reflectivity for -polarized (a) and -polarized (b) laser pulses as functions of the incident fluence for different pulse durations of 60 and 500 fs, respectively.

Image of FIG. 9.
FIG. 9.

(a) Reflected spectra of 500 fs linearly chirped pulses on an AR-coating plate target at an incident intensity of for - and -polarization, respectively. The intensity is normalized by the peak intensity of the incident laser pulse. (b) Time-resolved reflectivity calculated from (a).

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/content/aip/journal/pop/16/10/10.1063/1.3247865
2009-10-20
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Time-resolved measurements on reflectivity of an ultrafast laser-induced plasma mirror
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/10/10.1063/1.3247865
10.1063/1.3247865
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