Sub-Second Tracing of Lattice Mode Changes During the Melting of an Anthracene Crystal

2010 ◽  
Author(s):  
Hajime Okajima ◽  
Hiro-o Hamaguchi ◽  
P. M. Champion ◽  
L. D. Ziegler
Keyword(s):  
Lattice Mode ◽  
Anthracene Crystal

Electrochemistry at anthracene crystal/aqueous nitrite, nitrate solution interface

1988 ◽  
Vol 92 (9) ◽  
pp. 2506-2511
Author(s):  
Baldwin Leong ◽  
Martin Pope ◽  
Joseph Steigman
Keyword(s):  
Nitrate Solution ◽  
Solution Interface ◽  
Anthracene Crystal ◽  
Nitrite Nitrate

Impurity induced phosphorescence in anthracene crystal

1975 ◽  
Vol 30 (1) ◽  
pp. 5-10 ◽  
Author(s):  
A. Brillante ◽  
D.P. Craig ◽  
A.W.-H. Mau ◽  
J. Rajikan
Keyword(s):  
Anthracene Crystal

scholarly journals Parametric amplification of optical phonons

2018 ◽  
Vol 115 (48) ◽  
pp. 12148-12151 ◽  
Author(s):  
A. Cartella ◽  
T. F. Nova ◽  
M. Fechner ◽  
R. Merlin ◽  
A. Cavalleri
Keyword(s):  
Density Functional ◽  
Optical Gain ◽  
Density Functional Theory Calculations ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Many Body ◽  
Microscopic Mechanism ◽  
Lattice Mode ◽  
Many Body Interactions ◽  
Kinetics Of

We use coherent midinfrared optical pulses to resonantly excite large-amplitude oscillations of the Si–C stretching mode in silicon carbide. When probing the sample with a second pulse, we observe parametric optical gain at all wavelengths throughout the reststrahlen band. This effect reflects the amplification of light by phonon-mediated four-wave mixing and, by extension, of optical-phonon fluctuations. Density functional theory calculations clarify aspects of the microscopic mechanism for this phenomenon. The high-frequency dielectric permittivity and the phonon oscillator strength depend quadratically on the lattice coordinate; they oscillate at twice the frequency of the optical field and provide a parametric drive for the lattice mode. Parametric gain in phononic four-wave mixing is a generic mechanism that can be extended to all polar modes of solids, as a means to control the kinetics of phase transitions, to amplify many-body interactions or to control phonon-polariton waves.

Tunable plasmonic-lattice mode sensors with ultrahigh sensitivities and figure-of-merits

2016 ◽  
Vol 119 (24) ◽  
pp. 244503 ◽  
Author(s):  
S. M. Sadeghi ◽  
W. J. Wing ◽  
Q. Campbell
Keyword(s):  
Lattice Mode
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