Now showing items 1-10 of 76
Comment on the relationship between an exact two-photon solution and a two-photon vector model
(Physical Review A, 1977-04)
The exact pulse solution of Brewer and Hahn for optical two-photon transitions is shown to reduce in the adiabatic limit to the two-photon vector model used by Grischkowsky, Loy, and Liao. The connection between the two ...
Coherent excitation, incoherent excitation, and adiabatic states
(Physical Review A, 1976-08)
Coherent excitation of an atomic excited state occurs during the propagation of near-resonant light pulses and is responsible for the induced polarization. Simultaneously, incoherent excitation occurs due to the relaxation ...
Behavior of electron-spin echoes and photon echoes in high fields
(Physical Review B, 1970-07-01)
The amplitude of the electron-spin or photon echo from an ensemble of isolated atoms (echo atoms) interacting with magnetic-nuclear neighbors is calculated as a function of the magnitude and the orientation of an applied ...
Echo behavior in ruby
(Physical Review Letters, 1968-01-08)
Carrier dynamics of electrons and holes in moderately doped silicon
(Physical Review B, 1990-06-15)
A time-domain spectroscopic technique, based on the generation and detection of a collimated beam of subpicosecond broadband terahertz pulses, is used to measure the absorption and dispersion of n- and p-type silicon, with ...
Self-focusing of light by Potassium vapor
(Physical Review Letters, 1970-04-20)
Subpicosecond electrical pulse generation using photoconductive switches with long carrier lifetimes
(Applied Physics Letters, 1989-03-13)
Using a new mechanism of electrical pulse generation, we have generated 350 fs (full width at half maximum) electrical pulses on a coplanar transmission line, fabricated on an unimplanted silicon-on-sapphire substrate
Adiabatic compression of terahertz waves using metal flares
(Applied Physics Letters, 2010-05-14)
We report on the adiabatic free-space coupling of broadband terahertz (THz) radiation through a subwavelength gap using metal flares. Amplitude coupling ratios better than 30% are obtained by optimizing the curvature. This ...
Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor
(Applied Physics Letters, 2010-08-17)
We report on the layer thickness determination on dielectrically coated metal cylinders using terahertz (THz) time-domain spectroscopy. A considerable sensitivity increase of up to a factor of 150 is obtained for layers ...
Self-defocusing of light by adiabatic following in Rubidium vapor
(Physical Review A, 1972-10)
The narrow-line output of a dye laser on the low-frequency side of the 2P1/2 resonance line (7948A) of rubidium was self-defocused by passage through dilute rubidium vapor. The defocusing was caused by the electronic ...