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Terahertz time-domain spectroscopy of low-energy excitations in glasses

✍ Scribed by S. Kojima; H. Kitahara; S. Nishizawa; Y.S. Yang; M. Wada Takeda

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
280 KB
Volume
744-747
Category
Article
ISSN
0022-2860

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✦ Synopsis

The low-energy excitations in glasses were studied by the terahertz time-domain spectroscopy (THz-TDS). The coherent THz radiation by a femto-second pulse laser enables the determination of the real and the imaginary parts of complex dielectric constants in the frequency range between 0.3 and 2.4 THz. The complex dielectric spectra of glasses clearly show the existence of broad low-energy excitations called boson peaks.

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