electromagnetically induced transparency - IAP TU
... and quantum information, lossless propagation of laser beams through optically thick media, and highly efficient and selective population transfer via coherent adiabatic processes. EIT is one of an interrelated group of processes, for example, including coherent population trapping (CPT) and coheren ...
... and quantum information, lossless propagation of laser beams through optically thick media, and highly efficient and selective population transfer via coherent adiabatic processes. EIT is one of an interrelated group of processes, for example, including coherent population trapping (CPT) and coheren ...
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... matching and linear absorption was studied and the results were compared with those of ideal conditions free from phase mismatch and absorption. Effects of pump pulse width and multiple pulse pumping were also studied, which can lower the two-photon absorption and narrow the THz wave spectrum. Third ...
... matching and linear absorption was studied and the results were compared with those of ideal conditions free from phase mismatch and absorption. Effects of pump pulse width and multiple pulse pumping were also studied, which can lower the two-photon absorption and narrow the THz wave spectrum. Third ...
COM342_L3 - eej.ulst.ac.uk
... • first manual centralised switching office with jumpers being placed by operators Fig2.14b • the interconnection of switching offices(cities) led to the same problem one conductor per office pair same problems as fig 2.14a • hierarchy developed as in fig 2.14c ...
... • first manual centralised switching office with jumpers being placed by operators Fig2.14b • the interconnection of switching offices(cities) led to the same problem one conductor per office pair same problems as fig 2.14a • hierarchy developed as in fig 2.14c ...
Estimation of longitudinal resolution in optical coherence
... Significant differences in computed longitudinal resolution and coherence length for real and theoretical sources with the same bandwidth and center wavelength but with different spectral functions were presented. Such results demonstrate that it is important to take into account the shape of the so ...
... Significant differences in computed longitudinal resolution and coherence length for real and theoretical sources with the same bandwidth and center wavelength but with different spectral functions were presented. Such results demonstrate that it is important to take into account the shape of the so ...
Coatings - CVI Laser Optics
... The vast majority of optical components are made of various types of glass, and most are coated with thin layers of special materials. The purpose of these coatings is to modify the reflection and transmission properties of the components’ surfaces. Whenever light passes from one medium into a mediu ...
... The vast majority of optical components are made of various types of glass, and most are coated with thin layers of special materials. The purpose of these coatings is to modify the reflection and transmission properties of the components’ surfaces. Whenever light passes from one medium into a mediu ...
Fiber Bragg Gratings (FBGs)
... it is recommended to use shorter wavelengths. Fibercore’s SHB1250 and SLB1250 are designed for use at 1310nm to give a higher Verdet constant than at 1550nm, whilst also enabling the use of standard low cost telecoms components, such as light sources and fiber couplers and utilizing the 1300nm low a ...
... it is recommended to use shorter wavelengths. Fibercore’s SHB1250 and SLB1250 are designed for use at 1310nm to give a higher Verdet constant than at 1550nm, whilst also enabling the use of standard low cost telecoms components, such as light sources and fiber couplers and utilizing the 1300nm low a ...
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.