Due to the strong interaction between the optical phonons and plasma waves, the optical reststrahlen frequency is raised while the plasma frequency is lowered. The acoustic phonons can have gain under application of a suitable drift field. The form of the attenuation constant suggests that the ...
We report the results of the investigation of the acoustic and optical phonons in quasi-two-dimensional antiferromagnetic semiconductors of the transition metal phosphorus trisulfide family with Mn, Fe, Co, Ni, and Cd as metal atoms. The Brillouin-Mandelstam and Raman light scattering spectroscopies ...
or stronger than its coupling to optical phonon modes and when the difference in energy berween the final and initial electronic state, Δ, is of the same order as hω/sub Debye/, the jump rate is qualitatively similar to that obtained when only the coupling to acoustic phonons is included...
此极化(polarizability)是伴随著微弱之光学声子(optical phonons)发生,而有时此是介电常数预测值与实测值差异之来由。虽然阳 … ssttpro.acesuppliers.com|基于2个网页 2. 光性声子 材料中电子,光性声子(Optical phonons)及音性声子(Acoustic phonons)所扮演的角色。飞秒电子显微术目前还 ...
phonons/ acoustic two-phonon vibrationslight metalsoptical one-phonon vibrationsFermi resonanceanharmonicitycrystal lattice vibrationsIt is shown that the anharmonicity of crystal lattice vibrations in light metals such as beryllium, can give rise to a Fermi resonance of optical one-phonon and acoustic ...
Here, we develop a platform for nanoscale cavity optomechanical circuits in which optomechanical cavities supporting co-localized 1,550 nm photons and 2.4 GHz phonons are combined with photonic and phononic waveguides. Working in GaAs facilitates manipulation of the localized mechanical mode either ...
This region is well fitted by two exponential functions with relaxation times of 2.0 6 0.1 ps and 13.1 6 0.5 ps, which can be attributed to the interaction of the electrons with incoherent optical and acoustic phonons respect- ively14,15. Weak superimposed oscillations with frequency of 43 ...
We demonstrate theoretically the simultaneous localization of photons and phonons in the same spatial region by introducing lattice defects in a periodic a... M Maldovan,EL Thomas - 《Applied Physics Letters》 被引量: 206发表: 2006年 Phononic bandgap guidance of acoustic modes in photonic crystal...
发布日期2016 Phonons underlie the propagation of sound and the transport of heat in materials. With outstanding progress in the design of phononic crystals, it is now feasible to control the acoustic properties of these materials and to endow them with unique acoustic properties. For instance, it...
When optical beams comprised of photons travel via fibers, they lead to vibrations that produce acoustic waves, consisting of phonons. Optics PhD students Wendao Xu (left) and Arjun Iyer in the lab of optics professor Will Renninger in 2020. (University of Rochester photo/J. Adam Fenster) ...