Quantum emission of a medium with a time-dependent refractive index

1992 ◽  
Vol 4 (5) ◽  
pp. 277-280 ◽  
Author(s):  
V V Hizhnyakov
Keyword(s):  
Refractive Index ◽  
Time Dependent

Optical excitation waves in a molecular crystal

1964 ◽  
Vol 282 (1390) ◽  
pp. 433-445 ◽  
Keyword(s):  
Refractive Index ◽  
Quantum Theory ◽  
Excited States ◽  
Molecular Crystal ◽  
Optical Excitation ◽  
Time Dependent ◽  
Hartree Approximation ◽  
Quasi Particle ◽  
Quantum Theory Of Radiation ◽  
Classical Picture

We have used the quantum theory of radiation, within the time-dependent Hartree approximation, to study exciton states of a van der Waals molecular crystal. The radiation variables are eliminated to give a semi-classical picture of molecular dipoles interacting through a retarded potential, and the solutions of the Hartree equations are closely connected with the quasi-particle excited states in Agranovich’s theory. In the Lorentz-Lorenz approximation the crystal has excited states which correspond to both longitudinal and transverse exciton weaves, and the refractive index behaves classically. The paper concludes with a brief discussion of metallic reflexion by dye crystals.

Mode-locking observation of a CO2 laser by intracavity plasma injection

1980 ◽  
Vol 58 (6) ◽  
pp. 840-844 ◽  
Author(s):  
P. K. John ◽  
M. Dembinski
Keyword(s):  
Refractive Index ◽  
Shock Tube ◽  
Plasma Density ◽  
Co2 Laser ◽  
Mode Locking ◽  
Time Dependent ◽  
Electromagnetic Shock ◽  
Plasma Injection ◽  
Phase Perturbation ◽  
Underdense Plasma

A TEA CO2 laser was simultaneously Q-switched and mode-locked when an underdense plasma was injected into the cavity. The plasma was produced in an electromagnetic shock tube. Plasma density and temperature were Ne ~ 1017 cm−3 and Te ~ 2 eV, respectively. Phase perturbation of the cavity due to the time dependent plasma refractive index could account for the observed mode-locking.

The time-dependent coupled Hartree-Fock approximation

1966 ◽  
Vol 291 (1425) ◽  
pp. 291-295 ◽  
Keyword(s):  
Refractive Index ◽  
Variational Calculation ◽  
Time Dependent ◽  
Electron Systems ◽  
Frequency Dependent ◽  
Hartree Fock ◽  
Helium Gas

A coupled Hartree-Fock approximation for describing the effects of time-dependent perturbations on many-electron systems is presented. It is applied to the calculation of the frequency-dependent refractive index of helium gas with results that differ by between 4 and 8% from the accurate values obtained by a refined variational calculation.

Time-Dependent Detection of the Refractive Index Distribution of Nonlinear Optical Materials

2016 ◽  
Vol 28 (3) ◽  
pp. 260-263
Author(s):  
Tengqian Sun ◽  
Qing Ye ◽  
Xiaowan Wang ◽  
Jin Wang ◽  
Zhichao Deng ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Time Dependent ◽  
Nonlinear Optical Materials ◽  
Refractive Index Distribution ◽  
Index Distribution
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