The influence of surfaces and interfaces
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C.-K. Sun; J.C. Liang; S.P. DenBaars; D.S. Kim; Y.D. Cho; G.D. Sanders; J. Simmo
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Article
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2000
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Elsevier Science
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English
โ 100 KB
Experiments have shown that ultrafast optical excitation of semiconductors can produce oscillating changes in the optical properties of the material. The frequency of the oscillations in transmission or reflection usually matches one of the phonon modes, typically the q = 0 optical mode. These oscil