Nonperturbative theory of temperature‐dependent optical dephasing in crystals. I. Acoustic or optical phonons

1984 ◽  
Vol 81 (12) ◽  
pp. 5471-5479 ◽  
Author(s):  
D. Hsu ◽  
J. L. Skinner
Keyword(s):  
Optical Phonons ◽  
Temperature Dependent ◽  
Nonperturbative Theory ◽  
Optical Dephasing

scholarly journals Anisotropic Generation and Detection of Coherent Ag Phonons in Black Phosphorus

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1202
Author(s):  
Seong-Yeon Lee ◽  
Ki-Ju Yee
Keyword(s):  
Thin Film ◽  
Linear Dichroism ◽  
Black Phosphorus ◽  
Sample Thickness ◽  
Optical Phonons ◽  
Temperature Dependent ◽  
Direct Bandgap ◽  
Anisotropic Properties ◽  
Thin Film Interference ◽  
Coherent Phonons

Black phosphorus (BP) has attracted great attention due to its layer-tuned direct bandgap, in-plane anisotropic properties, and novel optoelectronic applications. In this work, the anisotropic characteristics of BP crystal in terms of the Raman tensor and birefringence are studied by investigating polarization dependence in both the generation and detection of Ag mode coherent phonons. While the generated coherent phonons exhibit the typical linear dichroism of BP crystal, the detection process is found here to be influenced by anisotropic multiple thin film interference, showing wavelength and sample thickness sensitive behaviors. We additionally find that the Ag1 and Ag2 optical phonons decay into lower frequency acoustic phonons through the temperature-dependent anharmonic process.

Temperature‐Dependent Optical Phonons in Lead Titanate

1970 ◽  
Vol 53 (7) ◽  
pp. 2946-2955 ◽  
Author(s):  
N. E. Tornberg ◽  
C. H. Perry
Keyword(s):  
Lead Titanate ◽  
Optical Phonons ◽  
Temperature Dependent

scholarly journals Anomalous optical phonons in Cs0.9(NH4)0.1H2AsO4: A temperature-dependent Raman Study

AIP Advances ◽  
2013 ◽  
Vol 3 (6) ◽  
pp. 062123 ◽  
Author(s):  
P. Kumar ◽  
G. Sriprakash ◽  
K. Rukmani ◽  
K. P. Ramesh ◽  
D. V. S. Muthu
Keyword(s):  
Optical Phonons ◽  
Temperature Dependent ◽  
Raman Study

scholarly journals Extraction of temperature-dependent exciton-polariton damping in InP bulk crystal

2020 ◽  
Vol 18 ◽  
pp. 15-19
Author(s):  
S. A. Vaganov
Keyword(s):  
Temperature Dependence ◽  
Ground State ◽  
Extraction Procedure ◽  
Inhomogeneous Broadening ◽  
Bulk Crystal ◽  
Optical Phonons ◽  
Temperature Dependent ◽  
Ground State Absorption ◽  
Material Parameters ◽  
Dissipative Mechanism

The temperature dependence of exciton-polariton damping in InP bulk crystal was extracted by the method of integrated absorption. The extraction procedure excluding the contribution of inhomogeneous broadening into the exciton ground state absorption linewidth is graphically illustrated. The extracted temperature-dependent damping is analyzed regarding the primary dissipative mechanism in order to determine the material parameters of exciton-polariton scattering by acoustic and optical phonons.

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