Reversing Light: Negative Refraction
... alone must have a positive imaginary part—this is necessary for a passive material. This briefly stated argument shows why the material Veselago pondered years ago is so unique: the index of refraction is negative. A negative refractive index implies that the phase of a wave advancing through the me ...
... alone must have a positive imaginary part—this is necessary for a passive material. This briefly stated argument shows why the material Veselago pondered years ago is so unique: the index of refraction is negative. A negative refractive index implies that the phase of a wave advancing through the me ...
MODIFIED NONLINEAR SCHRÖDINGER EQUATION FOR
... Based on the rigorous development of the nonlinear optics method, we have derived the mode1 equation which describes the propagation of coherent optical pulses in the nonlinear fibres. This equation consists of a combination of the exponential nonlinear Schrodinger equation and the derivative one. I ...
... Based on the rigorous development of the nonlinear optics method, we have derived the mode1 equation which describes the propagation of coherent optical pulses in the nonlinear fibres. This equation consists of a combination of the exponential nonlinear Schrodinger equation and the derivative one. I ...
Quantum Phase Noise and Field Correlation in Single Frequency
... the normalized time-delay T,,i.e., for completely decorrelated homodyne detection of beams with correlated phase and phase 0 vanishes. On quadrature [21]. Theresultsindicateforeach fields: its dependence on the phase matching case that the the other hand for a value of T , close to zero it becomes v ...
... the normalized time-delay T,,i.e., for completely decorrelated homodyne detection of beams with correlated phase and phase 0 vanishes. On quadrature [21]. Theresultsindicateforeach fields: its dependence on the phase matching case that the the other hand for a value of T , close to zero it becomes v ...
Effects of Quantum well Size Alteration on Excitonic Population
... Slow light in semiconductor can be obtained by increasing the refractive index. One possible way for reducing group velocity is using materials in which d n / d is as large as possible [14]. The refractive index of such sample is typically small [15-16]. But it varies rapidly in the region of the ...
... Slow light in semiconductor can be obtained by increasing the refractive index. One possible way for reducing group velocity is using materials in which d n / d is as large as possible [14]. The refractive index of such sample is typically small [15-16]. But it varies rapidly in the region of the ...
Experimental characterization of the optical fiber sensors Andrei Stancalie, Gelu Ilie
... and the reference sensor, were simultaneously recorded in the laboratory. The calibration procedure of the optical fiber sensors aims to: a) study their parameters at constant temperature; the Bragg sensors parameters are stored in databases which contain also, the recorded Bragg peak shift, the fib ...
... and the reference sensor, were simultaneously recorded in the laboratory. The calibration procedure of the optical fiber sensors aims to: a) study their parameters at constant temperature; the Bragg sensors parameters are stored in databases which contain also, the recorded Bragg peak shift, the fib ...
Plasmonic orbital angular momentum manipulation through
... 633 nm (He-Ne laser) was converted to circular polarization after passing through a quarter waveplate. Subsequently, the circularly polarized beam illuminated on a spiral phase plate encoded with topological charge l to generate circularly polarized OV. If the handedness of the circular polarization ...
... 633 nm (He-Ne laser) was converted to circular polarization after passing through a quarter waveplate. Subsequently, the circularly polarized beam illuminated on a spiral phase plate encoded with topological charge l to generate circularly polarized OV. If the handedness of the circular polarization ...
Colorimeters
... absorb light for a variety of reasons. Pigments absorb light at different wavelengths. A cloudy solution will simply scatter/block the passage of light (sometimes a colorimeter is used to monitor the growth of a bacterial or yeast culture). The % transmission or the % absorbance is recorded (you c ...
... absorb light for a variety of reasons. Pigments absorb light at different wavelengths. A cloudy solution will simply scatter/block the passage of light (sometimes a colorimeter is used to monitor the growth of a bacterial or yeast culture). The % transmission or the % absorbance is recorded (you c ...
Focal shift of silicon microlen array in mid
... in Fig. 3 the positions of the objective and camera were fixed. We adjusted the location of MLAs along optical axis, by doing this we set the front focal plane of objective at the surface of the silicon MLAs. This focal plane can be confirmed when a clear image of the surface structure, i.e., the co ...
... in Fig. 3 the positions of the objective and camera were fixed. We adjusted the location of MLAs along optical axis, by doing this we set the front focal plane of objective at the surface of the silicon MLAs. This focal plane can be confirmed when a clear image of the surface structure, i.e., the co ...
Winter 2008 exam 1 - BYU Physics and Astronomy
... 15. (5 pts) A 10 mW continuously-on laser beam has a wavelength of 633 nm. Assume that the laser beam is 1 mm in diameter and has uniform intensity throughout the beam profile (the cross-section area). What are the magnitudes of the electric and magnetic fields present in the beam? ...
... 15. (5 pts) A 10 mW continuously-on laser beam has a wavelength of 633 nm. Assume that the laser beam is 1 mm in diameter and has uniform intensity throughout the beam profile (the cross-section area). What are the magnitudes of the electric and magnetic fields present in the beam? ...
Understanding Radiance, Irradiance and Radiant Flux
... The three terms discussed above are quantities used to characterize radiation within a certain wavelength band, (UV, VIS and/or IR). It is also common to consider those values for unit wavelength (per nm) in the spectrum. For radiation power per unit of wavelength, spectral radiant flux is used with ...
... The three terms discussed above are quantities used to characterize radiation within a certain wavelength band, (UV, VIS and/or IR). It is also common to consider those values for unit wavelength (per nm) in the spectrum. For radiation power per unit of wavelength, spectral radiant flux is used with ...
Mach Zehnder Interferometer and its Applications
... the core produce an interference pattern thus producing a very effective in-line MZI. This MZI has the same physical path length in both sensing and reference arms but has different optical path lengths because of modal dispersion as the beam passing through cladding experiences refractive index whi ...
... the core produce an interference pattern thus producing a very effective in-line MZI. This MZI has the same physical path length in both sensing and reference arms but has different optical path lengths because of modal dispersion as the beam passing through cladding experiences refractive index whi ...
Practical aspects of Microscopy
... Phase contrast is based on the destructive interference of light scattered from small features associated with a difference in height h. Based on the idea that the scattered amplitude is approximately π/2 out-of-phase with the specularly reflected ...
... Phase contrast is based on the destructive interference of light scattered from small features associated with a difference in height h. Based on the idea that the scattered amplitude is approximately π/2 out-of-phase with the specularly reflected ...
Chapter 2.1 - Focusing Fundamentals
... These rules about waves also apply to photons. When two photons have waves that reinforce each other, you get a bright spot. When the waves cancel each other out because they coincide peak to trough, you get a dark spot. When light passes through an aperture, the light waves are diffracted, changing ...
... These rules about waves also apply to photons. When two photons have waves that reinforce each other, you get a bright spot. When the waves cancel each other out because they coincide peak to trough, you get a dark spot. When light passes through an aperture, the light waves are diffracted, changing ...
Chapter 2
... optical fiber : Ray-tracing approach; Mode Theory (Maxwell’s equations) ¾ RayRay-tracing approach provides a good approximation to light acceptance acceptance and guiding properties of optical fiber when the ratio of fiber radius to the the wavelength is large, which is known as smallsmall-wavelengt ...
... optical fiber : Ray-tracing approach; Mode Theory (Maxwell’s equations) ¾ RayRay-tracing approach provides a good approximation to light acceptance acceptance and guiding properties of optical fiber when the ratio of fiber radius to the the wavelength is large, which is known as smallsmall-wavelengt ...
Basic Physical Optics
... In our study of ray optics and image formation, we represented image points as “geometrical points,” without physical extent. That, of course, followed logically since light rays were used to locate the image points and light rays are lines that intersect clearly at geometrical points. But in realit ...
... In our study of ray optics and image formation, we represented image points as “geometrical points,” without physical extent. That, of course, followed logically since light rays were used to locate the image points and light rays are lines that intersect clearly at geometrical points. But in realit ...
Optical decay from a Fabry-Perot cavity faster than the decay time
... A second major motivation is the use of light forces on atoms in cavities which leads to trapping and cooling, as published recently [8,9]. Here, light fields at the single photon level lead to significant forces due to the large enhancement factor of a high finesse cavity. The next generation of ex ...
... A second major motivation is the use of light forces on atoms in cavities which leads to trapping and cooling, as published recently [8,9]. Here, light fields at the single photon level lead to significant forces due to the large enhancement factor of a high finesse cavity. The next generation of ex ...
