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Measuring 8–250 ps short pulses using a high-speed streak camera on kilojoule, petawatt-class laser systems
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10.1063/1.4811145
/content/aip/journal/rsi/84/7/10.1063/1.4811145
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/7/10.1063/1.4811145
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) and (b) A cylindrical lens produces a line focus. (c) Streak image with a cylindrical lens coupling. (d) Spatial profile shows modulations from the hot spots. (e) Temporal profile is distorted by the hot spots.

Image of FIG. 2.
FIG. 2.

(a) A 10° divergence angle in the spatial direction achieved a 6.1 mm spot size along the slit. (b) A 0.4° divergence angle in the temporal direction achieved a 270 m spot size across the slit. (c) A streak image of a 180 ps (FWHM) laser pulse obtained with the 10° × 0.4° diffuser, (d) spatial profile, and (e) temporal profile.

Image of FIG. 3.
FIG. 3.

(a) and (c) Streaked image and temporal profiles obtained through a cylindrical lens. Temporal profiles were distorted by the hot spots in ROI2. (b) and (d) Streaked image and temporal profiles obtained through a 10° × 0.4° diffuser. Temporal profiles are consistent across the spatial direction.

Image of FIG. 4.
FIG. 4.

The impulse response of the streak camera using the 10° × 0.4° diffuser was identical to the one that was previously obtained with a cylindrical lens. The FWHM pulse width was 2.5 ± 0.5 ps.

Image of FIG. 5.
FIG. 5.

Space-charge-broadening calibration for stretcher positions of 16 mm, 40 mm, and 80 mm denoted as = 16 mm, = 40 mm, and = 80 mm.

Image of FIG. 6.
FIG. 6.

Inverse relation between space-charge broadening and pulse width.

Image of FIG. 7.
FIG. 7.

Comparison of results from space-charge-broadening calibration and prediction.

Image of FIG. 8.
FIG. 8.

(a) Uniform streak image is achieved on high-energy laser shots; (b) the measured pulse shape agrees with the model prediction.

Image of FIG. 9.
FIG. 9.

(a) The space-charge-broadening calibrated pulse measurement gives 8.7 ps. (b) Three autocorrelation measurements, in conjunction with a decorrelation factor of 1.36 from modeling, give a pulse width of 8.5 ps.

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/content/aip/journal/rsi/84/7/10.1063/1.4811145
2013-07-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measuring 8–250 ps short pulses using a high-speed streak camera on kilojoule, petawatt-class laser systems
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/7/10.1063/1.4811145
10.1063/1.4811145
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