CH4 monitoring in ambient air by communication band laser diode based difference frequency generation in a quasi-phase-matched LiNbO3 waveguide
Methane in ambient air is detected by difference frequency generation in a direct-bonded quasi-phase-matched LiNbO3 ridge waveguide using near infrared communication band laser diodes as pump and sign...
Methane in ambient air is detected by difference frequency generation in a direct-bonded quasi-phase-matched LiNbO3 ridge waveguide using near infrared communication band laser diodes as pump and sign...
Impacts of intrinsic defects on luminescence properties of CuAlS2
The authors report on Raman scattering of CuAlS2 in order to study the influences of intrinsic defects on luminescence properties. The A1 mode is dominated in stoichiometric samples, whereas sulfur-po...
The authors report on Raman scattering of CuAlS2 in order to study the influences of intrinsic defects on luminescence properties. The A1 mode is dominated in stoichiometric samples, whereas sulfur-po...
Nonlinear inverse scattering and three-dimensional near-field optical imaging
Appl. Phys. Lett. 89, 221116 (2006); doi:10.1063/1.2396921
Published 29 November 2006
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The nonlinear inverse scattering problem for electromagnetic fields with evanescent components is considered. A solution to this problem is obtained in the form of a functional series expansion. The first term in the expansion corresponds to the pseudoinverse solution to the linearized inverse problem. The higher order terms represent nonlinear corrections to this result. Applications to the problem of three-dimensional optical imaging with subwavelength resolution are described and illustrated with numerical simulations.
©2006 American Institute of Physics
| History: | Received 18 September 2006; accepted 16 October 2006; published 29 November 2006 |
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http://link.aip.org/link/?APPLAB/89/221116/1 |
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