tuning of material optical properties by modification of interlayer
... its influence on electromagnetic wave transmission through quasi one-dimensional multilayer system made of alternating silver and nickel thin layers. Based on the study it can be concluded that the matrix method is useful for the study of photonic properties of multilayer structures. It has been fou ...
... its influence on electromagnetic wave transmission through quasi one-dimensional multilayer system made of alternating silver and nickel thin layers. Based on the study it can be concluded that the matrix method is useful for the study of photonic properties of multilayer structures. It has been fou ...
Shedding Light on Hybrid Optics: A Tutorial in
... about the same size as the waveguide MFD. The waveguide is then precisely positioned in free space until the endface of the waveguide is at the focal point. Since telecommunications systems deal with MFDs of only 10 µm or less, positioning equipment capable of submicron resolution along all three ax ...
... about the same size as the waveguide MFD. The waveguide is then precisely positioned in free space until the endface of the waveguide is at the focal point. Since telecommunications systems deal with MFDs of only 10 µm or less, positioning equipment capable of submicron resolution along all three ax ...
Superluminal and Slow Light Propagation in a Room
... alexandrite crystal. By using a modulation technique, we can vary the delay seen by a modulated beam from 440 to –50 s. We explain these results as the combination of different absorption cross sections and lifetimes for Cr3⫹ ions at either mirror or inversion sites within the BeAl2O4 crystal latti ...
... alexandrite crystal. By using a modulation technique, we can vary the delay seen by a modulated beam from 440 to –50 s. We explain these results as the combination of different absorption cross sections and lifetimes for Cr3⫹ ions at either mirror or inversion sites within the BeAl2O4 crystal latti ...
Optical Metrology - Bogazici University Physics Department
... FTP’s main advantage is that it uses only a single image to extract profile of an object. In other techniques, 3 or 4 images are required. ...
... FTP’s main advantage is that it uses only a single image to extract profile of an object. In other techniques, 3 or 4 images are required. ...
Ultrahigh-resolution optical coherence tomography
... near perfect cancellation of dispersion oscillations can be achieved. For practical reasons, 5:2 reflections on mirrors of type A and B are used instead of the optimum 6:2. This combination results in sufficiently flat dispersion characteristics so that broadband emission is obtained with a smooth m ...
... near perfect cancellation of dispersion oscillations can be achieved. For practical reasons, 5:2 reflections on mirrors of type A and B are used instead of the optimum 6:2. This combination results in sufficiently flat dispersion characteristics so that broadband emission is obtained with a smooth m ...
Optical amplifier
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.There are several different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. In doped fibre amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light. In semiconductor optical amplifiers (SOAs), electron-hole recombination occurs. In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons. Parametric amplifiers use parametric amplification.