Zobrazeno 1 - 10
of 15
pro vyhledávání: '"A D Streater"'
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 35:4125-4138
Alkali atoms that are diffusing away from a source via multiple surface scattering in a nonstick coated glass tube are monitored by laser fluorescence. Densities are measured by fluorescence intensity and weak-field absorption, and small asymmetries
Autor:
Alan D. Streater, Michael A. Vaksman
Publikováno v:
Canadian Journal of Physics. 78:285-291
Surface light-induced drift (SLID) is known to give rise to an extremely sensitive method of studying the state-specificity of gas-surface interactions. SLID occurs under velocity-selective laser excitation of a resonant gas whenever the scattering,
Publikováno v:
Physical Review A. 57:4983-4986
We report measured pressure ratios for mixtures of neon with other rare gases that lead to a cancellation of normal light-induced drift of potassium atoms excited on the ${D}_{1}$ line by a narrow-band laser. These data can provide a stringent test f
Autor:
M Brewer, J. Sagle, John Huennekens, R. K. Namiotka, A. D. Streater, DJ Namiotka, E Ehrlacher, A. P. Hickman
Publikováno v:
Physical Review A. 54:449-461
Autor:
J. A. Kleinfeld, A. D. Streater
Publikováno v:
Physical Review A. 53:1839-1853
We describe theoretical and experimental investigations of steady-state gain without population inversion that can occur on the ${\mathit{D}}_{1}$ transition of potassium, upon strong cw-laser excitation of the ${\mathit{D}}_{2}$ transition. A Raman-
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:435-448
We have used a light-induced drift (LID) experiment to determine ratios of cross sections for diffusion of potassium in the excited , and the ground levels in five rare gases. The measured ratios are combined with the ground-state cross sections and
Autor:
J. A. Kleinfeld, A. D. Streater
Publikováno v:
Physical Review A. 49:R4301-R4304
We report steady-state gain due to coherence effects in a potassium-helium mixture, for strong pumping near the ${\mathit{D}}_{2}$ line and probing near the ${\mathit{D}}_{1}$ line. The absorption-gain spectra are in good agreement with a four-level
Autor:
A D Streater, D T Mugglin
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 26:689-704
The authors have used the light-induced diffusive pulling (LDP) method to measure the ground state momentum transport cross sections and the relative difference of the excited and ground state cross sections with respect to the ground state for potas
Autor:
Dale C. Ness, Alan D. Streater
Publikováno v:
SPIE Proceedings.
Laser damage testing of ion beam sputtered (IBS) films for 1064 nm, Q-switched, low repetition rate operation typically involves the measurement of small physical defects that can be detected visually or photographically. For this kind of damage the
Publikováno v:
SPIE Proceedings.
The automated laser damage testing system at REO has been in operation for over a year, providing quantitative and detailed information on laser damage of ion beam sputtered (IBS) thin films in a production setting. Results have accumulated in a data