nonlinear optics in photonic structures - Dipartimento SBAI
... However, it is possible to make k = 0 (phasematching condition) using various skills; the most used of which takes advantage from the natural birefringence of the anisotropic crystals. From (34) we can see that k = 0 implies n ...
... However, it is possible to make k = 0 (phasematching condition) using various skills; the most used of which takes advantage from the natural birefringence of the anisotropic crystals. From (34) we can see that k = 0 implies n ...
Downloaded
... were measured by the h–2h goniometer provided 0.0058 accuracy. Sample was set by immersion oil on a cylindrical prism (nprism ¼ 1:52) for covering wide range of angles of incidence h (inset in Fig. 1). Numerical simulations were performed using transfer matrix technique with realistic dielectric fun ...
... were measured by the h–2h goniometer provided 0.0058 accuracy. Sample was set by immersion oil on a cylindrical prism (nprism ¼ 1:52) for covering wide range of angles of incidence h (inset in Fig. 1). Numerical simulations were performed using transfer matrix technique with realistic dielectric fun ...
Vacuum Chamber Design for a Magneto
... together with a dielectric coating along their inner diagonal faces. This coating takes advantage of a property of the Fresnel equations: there is an angle at which all of the light polarized perpendicular to the plane of the interface between materials is transmitted. This angle is known as Brewste ...
... together with a dielectric coating along their inner diagonal faces. This coating takes advantage of a property of the Fresnel equations: there is an angle at which all of the light polarized perpendicular to the plane of the interface between materials is transmitted. This angle is known as Brewste ...
rubidium vapor cell with integrated nonmetallic multilayer reflectors
... surfaces of the cell are characterized to have a reflectance over 80 % for incident angles up to 40◦ , which is almost three times greater than that of identically etched bare silicon sidewall reflector, which exhibits a reflectance under 30 %. To characterize the optical absorption by the encapsula ...
... surfaces of the cell are characterized to have a reflectance over 80 % for incident angles up to 40◦ , which is almost three times greater than that of identically etched bare silicon sidewall reflector, which exhibits a reflectance under 30 %. To characterize the optical absorption by the encapsula ...
Whispering-gallery-mode microdisk lasers
... the surface roughness [the inset of Fig. 2(b)], which is collected from the side by a CCD (charge coupled devices)-equipped spectrometer [Fig. 1(d)]. Experimentally, it is found that the increase of the pumping light intensity (I) led to an abrupt rise of the laser output at I th ¼ 634 mW=cm2 . The ...
... the surface roughness [the inset of Fig. 2(b)], which is collected from the side by a CCD (charge coupled devices)-equipped spectrometer [Fig. 1(d)]. Experimentally, it is found that the increase of the pumping light intensity (I) led to an abrupt rise of the laser output at I th ¼ 634 mW=cm2 . The ...
Observation of the rotational Doppler shift of a white
... The linear Doppler shift is usually associated with the lineof-sight component of velocity between the source and observer. However, the Doppler effect can also be observed from transverse motion. If a moving rough surface is illuminated at an oblique angle, the light of frequency ω0 scattered at no ...
... The linear Doppler shift is usually associated with the lineof-sight component of velocity between the source and observer. However, the Doppler effect can also be observed from transverse motion. If a moving rough surface is illuminated at an oblique angle, the light of frequency ω0 scattered at no ...
Observation of PT -Symmetry Breaking in Complex Optical
... unfolding of an eigenfunction into complementary eigenfunctions at the so-called exceptional point [16], previously studied in several fields of physics [17,18]. After this point, the spectrum ceases being entirely real and becomes complex, which marks the onset of a phase transition. To illustrate t ...
... unfolding of an eigenfunction into complementary eigenfunctions at the so-called exceptional point [16], previously studied in several fields of physics [17,18]. After this point, the spectrum ceases being entirely real and becomes complex, which marks the onset of a phase transition. To illustrate t ...
Journal of Modern Optics Slow and fast light: fundamentals and
... where n is the refractive (phase) index and ! is the angular frequency of the carrier wave of the light field. One refers to light as being slow light for vg c, fast light for vg 4 c [15], and backwards light for vg negative. Extreme values of the group velocity (that is, vg appreciably different ...
... where n is the refractive (phase) index and ! is the angular frequency of the carrier wave of the light field. One refers to light as being slow light for vg c, fast light for vg 4 c [15], and backwards light for vg negative. Extreme values of the group velocity (that is, vg appreciably different ...
Radiative transfer in ocean turbulence and its effect on underwater
... Figure 1. Schematics of the turbulent shear flow in the upper ocean considered in the present study. the propagation of a partially coherent beam in oceanic turbulence and illustrated the dependence of the normalized root-mean-square (RMS) width of the beam on turbulence. Korotkova and Farwell [2011 ...
... Figure 1. Schematics of the turbulent shear flow in the upper ocean considered in the present study. the propagation of a partially coherent beam in oceanic turbulence and illustrated the dependence of the normalized root-mean-square (RMS) width of the beam on turbulence. Korotkova and Farwell [2011 ...
APPENDIX When designing shape magnification into a lens, the two
... Step 1. After determining the amount of aniseikonia to correct, the lens for the eye with larger perceived image is designed first. This lens must be made as flat and as thin as possible. The optical laboratory can be consulted to determine how thin a particular lens can be made given the power and ...
... Step 1. After determining the amount of aniseikonia to correct, the lens for the eye with larger perceived image is designed first. This lens must be made as flat and as thin as possible. The optical laboratory can be consulted to determine how thin a particular lens can be made given the power and ...
Photonic crystal cavities in silicon dioxide
... Next, we use the perturbation design suggested by previous references and introduce a parabolic relationship between the lattice constant and the x-coordinate, thus forming an optical potential well.13 In particular, we choose a minimum effective lattice constant of 0.90a at the center of the potent ...
... Next, we use the perturbation design suggested by previous references and introduce a parabolic relationship between the lattice constant and the x-coordinate, thus forming an optical potential well.13 In particular, we choose a minimum effective lattice constant of 0.90a at the center of the potent ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.