Broadband Semiconductor Light Source for Optical Sensing
... medical application into consideration, it is preferable to minimize the influence of water dispersion and absorbance of a portion which covers portion to be measured present in the living organisms. This range of spectrum contributes to minimization of the influence with light having a spectrum of ...
... medical application into consideration, it is preferable to minimize the influence of water dispersion and absorbance of a portion which covers portion to be measured present in the living organisms. This range of spectrum contributes to minimization of the influence with light having a spectrum of ...
Supplement
... in frequency from the |2⟩ state used for imaging by ≈ 2 GHz and contribute negligibly to resonant imaging. Second, if the average probe intensity is too high, the atoms subjected to higher intensities will have a lower effective cross-section, and so any spatial fluctuations in the beam intensity will ...
... in frequency from the |2⟩ state used for imaging by ≈ 2 GHz and contribute negligibly to resonant imaging. Second, if the average probe intensity is too high, the atoms subjected to higher intensities will have a lower effective cross-section, and so any spatial fluctuations in the beam intensity will ...
Topic 12: Spatial Light Modulators and Modern Optical Systems
... No applied voltage the molecules are “aligned” by the surface groves. Square Wave applied, “induced” dipole on molecule that is then “twisted” by the electric field. Square Wave plus light: photo-conductor is locally discharged by the light, so molecules in these regions not effected by electric fie ...
... No applied voltage the molecules are “aligned” by the surface groves. Square Wave applied, “induced” dipole on molecule that is then “twisted” by the electric field. Square Wave plus light: photo-conductor is locally discharged by the light, so molecules in these regions not effected by electric fie ...
Ultra–large field-of-view two-photon microscopy
... of concerted study [3-5] and may be best examined in mice, where neurovascular function can be manipulated through both behavior and genetics [6, 7]. The brain-wide nature of these dynamics [8] implies the need for a microscope that can resolve micrometer-scale changes in vessel diameter across all ...
... of concerted study [3-5] and may be best examined in mice, where neurovascular function can be manipulated through both behavior and genetics [6, 7]. The brain-wide nature of these dynamics [8] implies the need for a microscope that can resolve micrometer-scale changes in vessel diameter across all ...
One-way invisible cloak using parity-time symmetric transformation optics Xuefeng Zhu, Liang Feng,
... virtual space to a physical space, myriad exotic effects such as invisibility cloaking become possible [3,8,11]. The previous studies were mainly focused on the perfect cloaks to make the concealed object omnidirectionally invisible to the outside observers [1,9]. In many cases, however, it might be ...
... virtual space to a physical space, myriad exotic effects such as invisibility cloaking become possible [3,8,11]. The previous studies were mainly focused on the perfect cloaks to make the concealed object omnidirectionally invisible to the outside observers [1,9]. In many cases, however, it might be ...
Optical trapping using cascade conical refraction of light
... the incident beam. Hamilton’s geometrical optics description has been extended to the paraxial wave optics theory of conical diffraction by Berry and others [3, 4] and the agreement with experimental results is excellent [5–7]. The ring-shaped beam is most sharply defined at the position known as th ...
... the incident beam. Hamilton’s geometrical optics description has been extended to the paraxial wave optics theory of conical diffraction by Berry and others [3, 4] and the agreement with experimental results is excellent [5–7]. The ring-shaped beam is most sharply defined at the position known as th ...
PDF
... agent that promotes formation of twisted configurations of n(r) with the equilibrium cholesteric pitch p (distance over which the director in a corresponding ground-state structure twists around the helical axis x by 2p) tuned to be approximately equal to the LC cell thickness d21–23. In homeotropic ...
... agent that promotes formation of twisted configurations of n(r) with the equilibrium cholesteric pitch p (distance over which the director in a corresponding ground-state structure twists around the helical axis x by 2p) tuned to be approximately equal to the LC cell thickness d21–23. In homeotropic ...
Holographic fabrication of 3D photonic crystals using silicon based
... polymer. The pre-solution was poured into the container. After the bubbles were blown away, the pre-polymer was cured on a hot-plate at 130 °C for 90 minutes as shown in Fig. 1(b). The prism was then removed and a silicon chip was placed on the inner surface of the PDMS mold with polished sides to r ...
... polymer. The pre-solution was poured into the container. After the bubbles were blown away, the pre-polymer was cured on a hot-plate at 130 °C for 90 minutes as shown in Fig. 1(b). The prism was then removed and a silicon chip was placed on the inner surface of the PDMS mold with polished sides to r ...
Measurement of The Nonlinear Refractive Index by Z
... nonlinear phase term. [8] When all these beams come to the aperture plane they are again united in one single beam. We get the electric field at the aperture Ea (r, t) and it is function of ∆φ0 . If we spatially integrate |Ea (r, t)|2 up to the aperture radius ra we get the transmitted power PT (∆φ0 ...
... nonlinear phase term. [8] When all these beams come to the aperture plane they are again united in one single beam. We get the electric field at the aperture Ea (r, t) and it is function of ∆φ0 . If we spatially integrate |Ea (r, t)|2 up to the aperture radius ra we get the transmitted power PT (∆φ0 ...
Waves & Oscillations Physics 42200 Spring 2015 Semester Lecture 30 – Geometric Optics
... L.CA: lateral chromatic aberration ...
... L.CA: lateral chromatic aberration ...
Optical Detection of Early Damage in Retinal Ganglion Cells in a
... operating within near-infrared light spectral range. The illuminating light was delivered by an optical fiber, collimated by a lens, and input into a cube beam splitter (BS, CM1-BS013; Thorlabs, Inc., Newton, NJ, USA), by which the light was divided into a sample arm and a reference arm. The sample ...
... operating within near-infrared light spectral range. The illuminating light was delivered by an optical fiber, collimated by a lens, and input into a cube beam splitter (BS, CM1-BS013; Thorlabs, Inc., Newton, NJ, USA), by which the light was divided into a sample arm and a reference arm. The sample ...
Light and Optics: We just learned that light is a wave (an
... Any transparent medium (air, H20, glass,...) that lets light through will have a number n, the "index of refraction", associated with it. n is determined by how fast light travels through the material. (Light only travels at c, the "speed of light", in vacuum. In materials, it is always slowed down. ...
... Any transparent medium (air, H20, glass,...) that lets light through will have a number n, the "index of refraction", associated with it. n is determined by how fast light travels through the material. (Light only travels at c, the "speed of light", in vacuum. In materials, it is always slowed down. ...
Generation of radially and azimuthally polarized light by optical
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
Two-Color Two-Photon Excitation Using Femtosecond Laser Pulses
... extend the wavelength range where the Ti:Sa laser can be used under retention of all advantages of two-photon excitation. According to theoretical considerations, spatial resolution13 and penetration ability,14 depending on the microscopical setup, are expected to improve for 2c2p excitation compare ...
... extend the wavelength range where the Ti:Sa laser can be used under retention of all advantages of two-photon excitation. According to theoretical considerations, spatial resolution13 and penetration ability,14 depending on the microscopical setup, are expected to improve for 2c2p excitation compare ...
Laser and its applications
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
anal chem II / IR spectrometry
... the distance between the two centers of charge. The change in bond length or angle due to vibrational or rotational motion must cause a net change in the dipole moment of the molecule. No net change in dipole moment occurs during the vibration or rotation of homonuclear species such as O2, N2, or Cl ...
... the distance between the two centers of charge. The change in bond length or angle due to vibrational or rotational motion must cause a net change in the dipole moment of the molecule. No net change in dipole moment occurs during the vibration or rotation of homonuclear species such as O2, N2, or Cl ...
A high numerical aperture (NA = 0.92)
... 0.92. Tailored to the requirements of optical lattice experiments, the objective lens features a relatively long working distance of 150 µm. Our two-lens design is remarkably insensitive to mechanical tolerances in spite of the large NA. Additionally, we demonstrate the application of a tapered opti ...
... 0.92. Tailored to the requirements of optical lattice experiments, the objective lens features a relatively long working distance of 150 µm. Our two-lens design is remarkably insensitive to mechanical tolerances in spite of the large NA. Additionally, we demonstrate the application of a tapered opti ...
I. Introduction - ER Publications
... In FSO concept, some parameters such as signal attenuation in the beam that affects by the atmospheric parameters and also the process of system adjustment and primary installation of the FSO unites have most significant effects on the system performance. [2] Also light propagation process which in ...
... In FSO concept, some parameters such as signal attenuation in the beam that affects by the atmospheric parameters and also the process of system adjustment and primary installation of the FSO unites have most significant effects on the system performance. [2] Also light propagation process which in ...
Holografie – lasery
... (green) and 488 nm (blue). The krypton laser produces is known for its red (647 nm) and yellow (568 nm). The two gases can be combined to produce a laser with quasi-white all-lines output. Air-cooled ion lasers can be operated either multiline (with several wavelengths operating simultaneously), or ...
... (green) and 488 nm (blue). The krypton laser produces is known for its red (647 nm) and yellow (568 nm). The two gases can be combined to produce a laser with quasi-white all-lines output. Air-cooled ion lasers can be operated either multiline (with several wavelengths operating simultaneously), or ...
PowerPoint 簡報
... A light beam incident on a small circular aperture becomes diffracted and its light intensity pattern after passing through the aperture is a diffraction pattern with circular bright rings (called Airy rings). If the screen is far away from the aperture, this would be a Fraunhofer diffraction patter ...
... A light beam incident on a small circular aperture becomes diffracted and its light intensity pattern after passing through the aperture is a diffraction pattern with circular bright rings (called Airy rings). If the screen is far away from the aperture, this would be a Fraunhofer diffraction patter ...
Sample pages 1 PDF
... However, BaK4 glass has a lower Abbé number than Bk7 glass. This means that any rays that are not normal (perpendicular) to the prism when they enter or exit it will be dispersed more by BaK4 glass than by BK7 glass. At the magnification in most binoculars, you are unlikely to be able to detect this ...
... However, BaK4 glass has a lower Abbé number than Bk7 glass. This means that any rays that are not normal (perpendicular) to the prism when they enter or exit it will be dispersed more by BaK4 glass than by BK7 glass. At the magnification in most binoculars, you are unlikely to be able to detect this ...
Talk, ppt
... The 2.0m LT (+RINGO) already responded to two GRBs: GRB 060418 in ~200s imposing a 2-σ limit of P < 8% and detecting significant polarization(10%) for GRB 090102 in a 60s exposure taken 150s after the event (Steele et al. 2009, Nat 462, 767). Support is given to a higher polarization which may be hi ...
... The 2.0m LT (+RINGO) already responded to two GRBs: GRB 060418 in ~200s imposing a 2-σ limit of P < 8% and detecting significant polarization(10%) for GRB 090102 in a 60s exposure taken 150s after the event (Steele et al. 2009, Nat 462, 767). Support is given to a higher polarization which may be hi ...
Experiments in Optics - Workspace
... wave theory of 1ight. Analysis of diffraction close to the diffracting aperture, known as near-field diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infi ...
... wave theory of 1ight. Analysis of diffraction close to the diffracting aperture, known as near-field diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infi ...
Far-field optical microscope with nanometer-scale
... by the periodic arrays of nanoholes. It is clear that all the surface plasmon-like modes, which propagate over a periodically corrugated gold surface must be leaky modes due to the photonic crystal effects. The dispersion laws of surface plasmons and normal photons propagating inside the dielectric ...
... by the periodic arrays of nanoholes. It is clear that all the surface plasmon-like modes, which propagate over a periodically corrugated gold surface must be leaky modes due to the photonic crystal effects. The dispersion laws of surface plasmons and normal photons propagating inside the dielectric ...
Raman Spectra of Optically Trapped Microcomplexes
... Ronchi rulers at the object plane were used to calibrating the on-screen magnification 14μm ...
... Ronchi rulers at the object plane were used to calibrating the on-screen magnification 14μm ...
Microscopy
Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy.Optical and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image. This process may be carried out by wide-field irradiation of the sample (for example standard light microscopy and transmission electron microscopy) or by scanning of a fine beam over the sample (for example confocal laser scanning microscopy and scanning electron microscopy). Scanning probe microscopy involves the interaction of a scanning probe with the surface of the object of interest. The development of microscopy revolutionized biology and remains an essential technique in the life and physical sciences.