2011
DOI: 10.1063/1.3595275
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Narrow-band acoustic attenuation measurements in vitreous silica at frequencies between 20 and 400 GHz

Abstract: Acoustic attenuation rates in vitreous silica in the 20–400 GHz frequency range have been measured using a multiple-pulse optical technique for generation of tunable multicycle acoustic waves that are detected interferometrically after traversal of the sample. The results connect the frequency ranges of several measurement methods, yielding a consistent description of the acoustic behavior.

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Cited by 49 publications
(54 citation statements)
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“…In general, the increase of the peak amplitudes would lead to the opportunity to detect the corresponding frequencies above the noise level for longer time, and, thus, to narrow the width of the Brillouin peaks and make more precise their positioning, in the case, when noise and not the inherent attenuation of the acoustic waves is the main factor of line broadening. Potentially, the so-called death-star optical scheme for the pump pulse shaping [41,48,49] could be also used for the selective enhancement of the particular Brillouin frequency, if necessary.…”
Section: Discussionmentioning
confidence: 99%
“…In general, the increase of the peak amplitudes would lead to the opportunity to detect the corresponding frequencies above the noise level for longer time, and, thus, to narrow the width of the Brillouin peaks and make more precise their positioning, in the case, when noise and not the inherent attenuation of the acoustic waves is the main factor of line broadening. Potentially, the so-called death-star optical scheme for the pump pulse shaping [41,48,49] could be also used for the selective enhancement of the particular Brillouin frequency, if necessary.…”
Section: Discussionmentioning
confidence: 99%
“…Many control strategies take advantage of terahertz (THz) modes of the material. An ubiquitous example is lattice vibrations (phonons) whose control by femtosecond laser pulses [4,5] has enabled new pathways to permanent material modification [6], insulator-to-metal transitions [7,8], and magnetization manipulation [2,9].…”
mentioning
confidence: 99%
“…2 Metal thin film has been widely and conveniently used as the acoustic transducer in picosecond ultrasonics, 12 but photothermal excitation, with response time of 1-2 ps, might limit the intrinsic bandwidth for either single pulses 12 or multicycle waves. 15 21 can support acoustic bandwidth up to 2 THz. 22 It should be noted that the bandwidth of acoustic spectroscopy of vitreous silica is not only limited by the generated pulses but also determined by the signal to noise ratio (SNR) of the recorded data.…”
mentioning
confidence: 99%
“…13 These techniques which utilize broadband pulse are convenient for frequency-dependent analysis in single measurement, but the obtained attenuation is higher than narrowband measurement. [14][15][16] The frequency-dependent behavior of acoustic attenuation in silica, studied by incoherent 9,17 or coherent method [18][19][20] for 100 GHz to 1 THz regime, is also controversial. The use of acoustic plane waves to study silica up to THz regime is important for several reasons.…”
mentioning
confidence: 99%
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