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Picosecond X-ray diffraction studies of laser-excited acoustic phonons in InSb

Larsson, Jörgen LU ; Allen, A; Bucksbaum, PH; Falcone, RW; Lindenberg, A; Naylor, G; Missalla, T; Reis, DA; Scheidt, K and Sjögren, Anders LU , et al. (2002) In Applied Physics A: Materials Science & Processing 75(4). p.467-478
Abstract
We have employed time-resolved X-ray diffraction with picosecond temporal resolution to measure the time-dependent rocking curves of laser-irradiated asymmetrically cut single InSb crystals. Coherent acoustic phonons were excited in the crystals by irradiation with 800-nm, 100-fs laser pulses at irradiances between 0.25 and 12 mJ/cm(2). The induced time-dependent strain profiles (corresponding to the coherent phonons) were monitored by diffracting collimated, monochromatic pulses Of X-rays from the irradiated crystals. Recording of the diffracted radiation with a fast low-jitter X-ray streak camera resulted in an overall temporal resolution of better than 2 ps. The strain associated with the coherent phonons modifies the rocking curve of... (More)
We have employed time-resolved X-ray diffraction with picosecond temporal resolution to measure the time-dependent rocking curves of laser-irradiated asymmetrically cut single InSb crystals. Coherent acoustic phonons were excited in the crystals by irradiation with 800-nm, 100-fs laser pulses at irradiances between 0.25 and 12 mJ/cm(2). The induced time-dependent strain profiles (corresponding to the coherent phonons) were monitored by diffracting collimated, monochromatic pulses Of X-rays from the irradiated crystals. Recording of the diffracted radiation with a fast low-jitter X-ray streak camera resulted in an overall temporal resolution of better than 2 ps. The strain associated with the coherent phonons modifies the rocking curve of the crystal in a time-dependent manner, and the rocking curve is recorded by keeping the angle of incidence of the X-rays upon the crystal fixed, but varying the energy of the incident X-rays around a central energy of 8.453 keV (corresponding to the peak of the rocking curve of the unperturbed crystal). The observed time-dependent diffraction from the irradiated crystals is in reasonable agreement with simulations over a wide range of energies from the unperturbed rocking-curve peak. (Less)
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publication status
published
subject
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Applied Physics A: Materials Science & Processing
volume
75
issue
4
pages
467 - 478
publisher
Springer
external identifiers
  • wos:000176768300002
  • scopus:18444395558
ISSN
1432-0630
DOI
10.1007/s003390201421
language
English
LU publication?
yes
id
fa5eb00a-010f-4acf-9b5e-6347ec2127c8 (old id 333893)
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2007-10-31 10:20:06
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2017-10-22 03:45:22
@article{fa5eb00a-010f-4acf-9b5e-6347ec2127c8,
  abstract     = {We have employed time-resolved X-ray diffraction with picosecond temporal resolution to measure the time-dependent rocking curves of laser-irradiated asymmetrically cut single InSb crystals. Coherent acoustic phonons were excited in the crystals by irradiation with 800-nm, 100-fs laser pulses at irradiances between 0.25 and 12 mJ/cm(2). The induced time-dependent strain profiles (corresponding to the coherent phonons) were monitored by diffracting collimated, monochromatic pulses Of X-rays from the irradiated crystals. Recording of the diffracted radiation with a fast low-jitter X-ray streak camera resulted in an overall temporal resolution of better than 2 ps. The strain associated with the coherent phonons modifies the rocking curve of the crystal in a time-dependent manner, and the rocking curve is recorded by keeping the angle of incidence of the X-rays upon the crystal fixed, but varying the energy of the incident X-rays around a central energy of 8.453 keV (corresponding to the peak of the rocking curve of the unperturbed crystal). The observed time-dependent diffraction from the irradiated crystals is in reasonable agreement with simulations over a wide range of energies from the unperturbed rocking-curve peak.},
  author       = {Larsson, Jörgen and Allen, A and Bucksbaum, PH and Falcone, RW and Lindenberg, A and Naylor, G and Missalla, T and Reis, DA and Scheidt, K and Sjögren, Anders and Sondhauss, P and Wulff, M and Wark, JS},
  issn         = {1432-0630},
  language     = {eng},
  number       = {4},
  pages        = {467--478},
  publisher    = {Springer},
  series       = {Applied Physics A: Materials Science & Processing},
  title        = {Picosecond X-ray diffraction studies of laser-excited acoustic phonons in InSb},
  url          = {http://dx.doi.org/10.1007/s003390201421},
  volume       = {75},
  year         = {2002},
}