Erratum: Spatiotemporal Stability of a Femtosecond Hard–X-Ray Undulator Source Studied by Control of Coherent Optical Phonons [Phys. Rev. Lett.<b>99</b>, 174801 (2007)]

Beaud, P.; Johnson, S. L.; Streun, A.; Abramsohn, D.; Grolimund, Daniel; Krasniqi, Faton; Schmidt, Thomas; Schlott, V.; Ingold, G.

doi:10.1103/physrevlett.100.099901

Cited by 53 publications

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“…Recently there has been considerable interest in the dynamics of the A 1g mode in the limit of a dense electronhole plasma, particularly for bismuth [21][22][23][24][25][26][27][28][29] . Hase et al 24 observed that the frequency of the mode is impulsively softened and chirped toward the equilibrium value over a few picoseconds.…”

Section: Introductionmentioning

confidence: 99%

Free-carrier relaxation and lattice heating in photoexcited bismuth

et al. 2013

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We report ultrafast surface pump and interface probe experiments on photoexcited carrier transport across single crystal bismuth films on sapphire. The film thickness is sufficient to separate carrier dynamics from lattice heating and strain, allowing us to investigate the time-scales of momentum relaxation, heat transfer to the lattice and electron-hole recombination. The measured electron-hole (e − h) recombination time is 12-26 ps and ambipolar diffusivity is 18-40 cm 2 /s for carrier excitation up to ∼ 10 19 cm −3 . By comparing the heating of the front and back sides of the film, we put lower limits on the rate of heat transfer to the lattice, and by observing the decay of the plasma at the back of the film, we estimate the timescale of electron-hole recombination. We interpret each of these timescales within a common framework of electron-phonon scattering and find qualitative agreement between the various relaxation times observed. We find that the carrier density is not determined by the e − h plasma temperature after a few picoseconds. The diffusion and recombination become nonlinear with initial excitation > ∼ 10 20 cm −3 .

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Section: Introductionmentioning

confidence: 99%

Free-carrier relaxation and lattice heating in photoexcited bismuth

et al. 2013

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“…Both humps are separated by a dip from which the modulated electrons have been removed. X-ray diffraction measurements on the phonon dynamics of photo-excited bismuth are consistent with an effective x-ray pulse duration and, thus, the full width at half maximum (FWHM) of the humps is ð140 AE 30Þ fs [9].…”

Section: Fundamentalsmentioning

confidence: 68%

“…[9,10]. Briefly, the slicing laser is a regenerative Ti:Sa amplifier with a pulse duration of 70 fs FWHM, a repetition rate of 2 kHz, and a maximum pulse energy of 2.5 mJ.…”

Section: Fundamentalsmentioning

confidence: 99%

Electro-optical measurement of sub-ps structures in low charge electron bunches

Müller

Peier

Schlott

et al. 2012

Phys. Rev. ST Accel. Beams

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Electro-optical detection of THz coherent synchrotron radiation is a nondestructive method for measuring subpicosecond electron bunches or subpicosecond substructures on otherwise longer electron bunches. With a new diagnostic setup at the Swiss Light Source, which combines an amplified Yb fiber laser and a suitable GaP crystal, we demonstrate sampling as well as spectrally resolved single-shot measurements of sliced electron bunches containing as little as a few pC of charge. The single-shot measurements not only allow for a precise electric field characterization but also for a detailed analysis of the timing jitter between the electron bunch and the synchronized Yb fiber laser. The measurements of subsequent turns in the storage ring show distinct deviations from the simulations and we find strong indications that this discrepancy is caused by radiation loss through coherent synchrotron radiation itself, which is not included in many of today's simulation codes.

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“…Therefore, one can investigate the lattice dynamics that result from high-amplitude phonon motions independent of the electronic or thermal contributions. * yuhsiang@mit.edu † Corresponding author: kanelson@mit.edu Although the excitation of bismuth with a pair of optical pump pulses has been probed experimentally several times in the literature [4,[7][8][9][10][11][12][13], almost none have fine interpump delay steps and a long delay window in the interpump delay due to the time-intensive nature of performing a two-dimensional (2D) pump-probe measurement. With single-shot spectroscopy, we can acquire a pump-probe trace with one laser shot and thus reduce the dimension of the delay scan down to 1.…”

Section: Introductionmentioning

confidence: 99%

Coherent control of optical phonons in bismuth

et al. 2017

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We have conducted degenerate pump-pump-probe experiments on semimetal bismuth with femtosecond time resolution, varying both pump-probe and interpump time delays. The observed phonon dynamics, including the amplitude, damping, frequency, and phase, can be modeled by the interference of two chirped damped oscillators. No lattice anharmonicity along the trigonal axis is observed. We also find evidence of phonon-mediated relaxation of the energy density at the sample surface.

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Erratum: Spatiotemporal Stability of a Femtosecond Hard–X-Ray Undulator Source Studied by Control of Coherent Optical Phonons [Phys. Rev. Lett.99, 174801 (2007)]

Cited by 53 publications

References 0 publications

Free-carrier relaxation and lattice heating in photoexcited bismuth

Free-carrier relaxation and lattice heating in photoexcited bismuth

Electro-optical measurement of sub-ps structures in low charge electron bunches

Coherent control of optical phonons in bismuth

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