Aalborg Universitet Photonic crystal distributed feedback fiber lasers with Bragg gratings
... modes to the core region. Note that the triangular fiber may also be considered for obtaining small mode areas by choosing as was done in [20]. In this case, however, large ratios limitations in the single-mode range of wavelengths becomes an important issue. The two chosen fiber designs are as will ...
... modes to the core region. Note that the triangular fiber may also be considered for obtaining small mode areas by choosing as was done in [20]. In this case, however, large ratios limitations in the single-mode range of wavelengths becomes an important issue. The two chosen fiber designs are as will ...
PDF - Universität Innsbruck
... quantum laws the cat is suspended in a controversial state of superposition between life and death. The process which prevents us from seeing quantum phenomena in daily life, such as a cat being simultaneously dead and alive, is the loss of extremely delicate quantum phase relations through irrevers ...
... quantum laws the cat is suspended in a controversial state of superposition between life and death. The process which prevents us from seeing quantum phenomena in daily life, such as a cat being simultaneously dead and alive, is the loss of extremely delicate quantum phase relations through irrevers ...
Quantitative spectroscopic photoacoustic imaging
... generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low) permits deeper light penetration and so greater imaging d ...
... generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low) permits deeper light penetration and so greater imaging d ...
Resolution scaling in STED microscopy
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
Distortion free pulse delay system using a pair of
... In recent years, there have been major breakthroughs in achieving slow-light, which results from a very steep positive dispersion, in a number of materials. Initially, electromagnetically induced transparency (EIT) was used in atomic gases [1] and solid-state material [2] for this purpose. EIT has a ...
... In recent years, there have been major breakthroughs in achieving slow-light, which results from a very steep positive dispersion, in a number of materials. Initially, electromagnetically induced transparency (EIT) was used in atomic gases [1] and solid-state material [2] for this purpose. EIT has a ...
Dispersive Signal Touch Technology
... Piezoelectric sensors positioned in the corners on the backside of the glass convert this smeared mechanical impulse into an electrical signal. The distance from each sensor determines the extent to which the signal is dispersed. Namely, the further away the “touch point” is from the sensor, the mor ...
... Piezoelectric sensors positioned in the corners on the backside of the glass convert this smeared mechanical impulse into an electrical signal. The distance from each sensor determines the extent to which the signal is dispersed. Namely, the further away the “touch point” is from the sensor, the mor ...
Optical microscope - Frank`s Hospital Workshop
... Usually, a λ of 550 nm is assumed, corresponding to green light. With air as medium, the highest practical NA is 0.95, and with oil, up to 1.5. In practice the lowest value of d obtainable is about 200 nm. Other optical microscope designs can offer an improved resolution. These include ultraviolet m ...
... Usually, a λ of 550 nm is assumed, corresponding to green light. With air as medium, the highest practical NA is 0.95, and with oil, up to 1.5. In practice the lowest value of d obtainable is about 200 nm. Other optical microscope designs can offer an improved resolution. These include ultraviolet m ...
Terahertz radar cross section measurements
... THz pulse shape. The electric field of the THz transients is detected by free-space electrooptic sampling [12–16] in a [110] zinc telluride (ZnTe) crystal (2 mm-thick). A second passive [100] 2mm-thick ZnTe crystal with anti-reflective coating for 800 nm light on one facet is stacked together with t ...
... THz pulse shape. The electric field of the THz transients is detected by free-space electrooptic sampling [12–16] in a [110] zinc telluride (ZnTe) crystal (2 mm-thick). A second passive [100] 2mm-thick ZnTe crystal with anti-reflective coating for 800 nm light on one facet is stacked together with t ...
Dispersion Compensation Using Tunable Chirped Apodized Far Off Resonance Fiber
... avoid the losses due to bulk optical devices such as the circulator if the grating is operated in transmission. The interaction between the signal optical field and the grating is much weaker. Hence, imperfections in the grating do not become impressed upon the signal field for dispersion compensati ...
... avoid the losses due to bulk optical devices such as the circulator if the grating is operated in transmission. The interaction between the signal optical field and the grating is much weaker. Hence, imperfections in the grating do not become impressed upon the signal field for dispersion compensati ...
Evanescent Waves in the Near- and the Far Field
... the near field contribution. In addition, there is a delta function in the field which only exists inside the source, and this part is therefore usually omitted. It has been realized for a long time that this delta function is necessary for mathematical consistency (Jackson, 1975), and more recently ...
... the near field contribution. In addition, there is a delta function in the field which only exists inside the source, and this part is therefore usually omitted. It has been realized for a long time that this delta function is necessary for mathematical consistency (Jackson, 1975), and more recently ...
Optimal wave-front reconstruction strategies for
... prior knowledge available both on turbulence and on noise statistics has been incorporated into the reconstruction. Note that, in the paper, we consider only open-loop conditions; that is, all the wave-front statistics are derived from the Kolmogorov or the von Kármán theory. No temporal behavior ...
... prior knowledge available both on turbulence and on noise statistics has been incorporated into the reconstruction. Note that, in the paper, we consider only open-loop conditions; that is, all the wave-front statistics are derived from the Kolmogorov or the von Kármán theory. No temporal behavior ...
