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Acquisition and pointing control for inter-satellite laser communications
Communications and range estimation between formation members are essential functions of formation flying. The inherent features of laser free-space link: small weight and mass, power efficiency,
Observation of two-photon emission from semiconductors
It is possible that when an electron relaxes from an excited state, it generates not one but two photons. Such two–photon emission has been seen in atomic systems, but never in semiconductors, until
Plasmonic modes in W-shaped metal-coated silicon grooves.
Measurements of a W-shaped metal-coated surface Plasmon polariton waveguides are presented, showing complex confined modes both in the coupled pair of air filled metal V-grooves, as well as within
Multimode add-drop multiplexing by adiabatic linearly tapered coupling.
A new scheme for realization of adiabatic mode add drop with a predefined coupling profile is proposed, and it is demonstrated by employing a linearly decreasing coupling coefficient along the propagation length.
Modeling of Complementary (Void) Plasmon Waveguiding
Plasmonic circuit elements, which are based on complementary waveguide structures (waveguides with a dielectric core and metal cladding), are becoming preferred plasmonic devices for applications. In
Large two‐dimensional arrays of phase‐locked vertical cavity surface emitting lasers
The phase‐locking of two‐dimensional (2D) arrays incorporating a large number of electrically pumped, vertical cavity surface emitting lasers (VCSELs) is described. The InGaAs/GaAs quantum well
Irreversible coupling by use of dissipative optics.
A novel concept is suggested in which media with loss and gain are used, thus breaking the time-reversal characteristics, to achieve a unidirectional optical mode interference and coupling, which is a desirable feature for light-wave circuits.
On the extraction of linear and nonlinear physical parameters in nonideal diodes
We describe a parameter extraction technique for the simultaneous determination of physical parameters in nonideal Schottky barrier, p-n and p-i-n diodes. These include the ideality factor,
Nonmodal Plasmonics: Controlling the Forced Optical Response of Nanostructures
Experiments reveal a new family of optical fields that originate at the boundary between a nanostructure and an incident light source, offering new paths for controlling optical behavior in a wide
Disk and ring microcavity lasers and their concentric coupling
Structures of concentric microdisk and rings were studied theoretically and experimentally. A three-dimensional (3-D) model was developed, emphasizing the possibility of coupling several concentric