HAPPY Dyes as Light Amplification Media in Thin Films

Amplification of Light in Absorbing Media: Stimulated Thermal Rayleigh Scattering

Using well defined input pulses the amplification by stimulated thermal Rayleigh scattering was investigated experimentally as a function of time (within the pulse), of absorption coefficient, and of interaction length. The frequency difference between the two interacting light pulses was varied with an accuracy better than Av/v = 10~8. Amplification was measured in the backward direction and a...

Light Transmission via Subwavelength Apertures in Metallic Thin Films

Strong light-matter interactions in heterostructures of atomically thin films.

The isolation of various two-dimensional (2D) materials, and the possibility to combine them in vertical stacks, has created a new paradigm in materials science: heterostructures based on 2D crystals. Such a concept has already proven fruitful for a number of electronic applications in the area of ultrathin and flexible devices. Here, we expand the range of such structures to photoactive ones b...

Micropackaging Using Thin Films as Mechanical Components

The development and testing of simulation software based on variational principles to examine the behavior of structures undergoing large scale elastic deflections is described. The programmes are used in the design of micro mechanical beams for packaging applications, specifically in the domain of passive alignment of optical components. The fabrication process is described for 5 μm thick sili...

Photophysical behavior of a homologous series of amphiphilic hemicyanine dyes in thin AOT films

The photophysical behavior of a homologous series of amphiphilic hemicyanines, incorporated in thin films, made by dip-coating glass slides in bis(2-ethylhexyl)sulfosuccinate sodium salt (AOT) reverse micellar solutions, has been studied by absorption spectrophotometry and computer simulation techniques. At relatively high dye concentration, a narrow band in the absorption spectrum was observed...