A micromechanical device generates a series of precise, equally spaced vibration frequencies, analogous to the light of the "optical frequency comb," which has dramatically improved precision measurements and could lead to ...
Optics & Photonics
Mar 6, 2017
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16
In analogy to the amplification of light in a laser, vibrations of a semiconductor crystal, so-called phonons, were enhanced by interaction with an electron current. Excitation of a metal-semiconductor nanostructure by intense ...
General Physics
Apr 4, 2019
0
12
Scientists at Tokyo Institute of Technology and Keio University investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum ...
Optics & Photonics
May 22, 2019
0
103
A University of Nottingham academic has won a prestigious five-year fellowship to explore the use of harmless sound waves to view deep inside living cells to aid early diagnose in diseases such as cancer.
Optics & Photonics
Sep 11, 2018
0
2
Center for Nanoscale Materials users from Toyota Research Institute of North America, working with CNM's Nanophotonics Group, have determined that bulk coherent acoustic vibrations are heavily damped by scattering from radially ...
Nanophysics
Oct 27, 2014
0
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