Inelastic Collisions of Atomic Antimony, Aluminum, Erbium and
... transition rates of aluminum (Al) are measured for collisions with 3 He. The experiment employs a clean method using a single pump/probe laser to measure the steady-state magnetic sublevel population resulting from the competition of optical pumping and inelastic collisions. The collision ratio γ is ...
... transition rates of aluminum (Al) are measured for collisions with 3 He. The experiment employs a clean method using a single pump/probe laser to measure the steady-state magnetic sublevel population resulting from the competition of optical pumping and inelastic collisions. The collision ratio γ is ...
feature article - Electrical and Computer Engineering
... (3) chemical synthesis of metal-cluster compounds and semiconductor nanocrystals,2 and (4) “natural lithography”.70,71 The inception of “natural lithography” dates from the seminal work of Fischer and Zingsheim with the introduction of “naturally”-assembled polystyrene latex nanospheres as a mask fo ...
... (3) chemical synthesis of metal-cluster compounds and semiconductor nanocrystals,2 and (4) “natural lithography”.70,71 The inception of “natural lithography” dates from the seminal work of Fischer and Zingsheim with the introduction of “naturally”-assembled polystyrene latex nanospheres as a mask fo ...
SOIL PENETROMETER WITH RAMAN SAMPLING
... 5.14 Color processed image of fluorescing Xanthoria. This image was taken with the uncooled camera with one second of exposure at 25 ºC............................ 84 5.15 Monochrome image an Antarctica rock with an endolithic bacteria layer. This image was taken with the uncooled camera with one se ...
... 5.14 Color processed image of fluorescing Xanthoria. This image was taken with the uncooled camera with one second of exposure at 25 ºC............................ 84 5.15 Monochrome image an Antarctica rock with an endolithic bacteria layer. This image was taken with the uncooled camera with one se ...
Transverse Modes in Large-Mode-Area Fibers
... Ring-shape refractive index fiber combines refractive index design and gain profile design. It consists of a low-NA center core region and an outer ring with a raised index [5]. The outer ring gives an increased spot size for the HOMs and increases their susceptibility to bend loss. Only the low-NA ...
... Ring-shape refractive index fiber combines refractive index design and gain profile design. It consists of a low-NA center core region and an outer ring with a raised index [5]. The outer ring gives an increased spot size for the HOMs and increases their susceptibility to bend loss. Only the low-NA ...
McIntyre, Stuart (2013) Limitations to light microscope resolution in
... optical sectioning microscope methods that are currently available in many biological labs. These include confocal, two-photon and selective illumination microscopes . The resolution capabilities of these systems and the associated objective lenses were investigated to determine the optimum conditio ...
... optical sectioning microscope methods that are currently available in many biological labs. These include confocal, two-photon and selective illumination microscopes . The resolution capabilities of these systems and the associated objective lenses were investigated to determine the optimum conditio ...
1 Non-Diffracting Waves: An Introduction1 - Wiley-VCH
... detail with an application of NDWs to biomedical optics by having recourse to the generalized Lorenz–Mie theory (GLMT). In section 1.10 we exploit the important fact that ‘‘soliton-like’’ solutions can be found also in the rather different case of the ordinary, linear Schroedinger equation – which i ...
... detail with an application of NDWs to biomedical optics by having recourse to the generalized Lorenz–Mie theory (GLMT). In section 1.10 we exploit the important fact that ‘‘soliton-like’’ solutions can be found also in the rather different case of the ordinary, linear Schroedinger equation – which i ...
Design and Analysis of Integrated Optical Waveguide Structures and
... (∆n) photonic structures. Besides silicon nitride (Si3N4) strip waveguides, lateral tapers, bended waveguides, two-dimensional photonic crystals (PhCs) the focus lies on monolithically integrated waveguide butt-coupled Silicon-based light emitting devices (Sibased LEDs) [4, 5] for use as bioanalytic ...
... (∆n) photonic structures. Besides silicon nitride (Si3N4) strip waveguides, lateral tapers, bended waveguides, two-dimensional photonic crystals (PhCs) the focus lies on monolithically integrated waveguide butt-coupled Silicon-based light emitting devices (Sibased LEDs) [4, 5] for use as bioanalytic ...
Parametric down-conversion devices: The coverage of the
... 50 MHz to 1 GHz). These devices are called Synchronously Pumped OPO (SPOPO), Fig. 1c. It should be emphasized that in all down-conversion devices operating with ultrashort (i.e. picosecond or femtosecond) pulses, the NLC length must be short enough so that group velocity mismatch (GVM) does not se ...
... 50 MHz to 1 GHz). These devices are called Synchronously Pumped OPO (SPOPO), Fig. 1c. It should be emphasized that in all down-conversion devices operating with ultrashort (i.e. picosecond or femtosecond) pulses, the NLC length must be short enough so that group velocity mismatch (GVM) does not se ...
Chapter 3 Passive resonators
... The first role of the laser is to provide a positive feedback in order to enhance the gain1 . Obviously, spectral properties of both the gain medium and the cavity will affect the final properties of the laser beam. In this chapter, we will look at the spectral properties of the cavity, but also see ...
... The first role of the laser is to provide a positive feedback in order to enhance the gain1 . Obviously, spectral properties of both the gain medium and the cavity will affect the final properties of the laser beam. In this chapter, we will look at the spectral properties of the cavity, but also see ...
View PDF - CiteSeerX
... system should not allow efficient extraction of the relevant properties of its interacting components by measurements. Physical systems that are produced by an uncontrolled production process, i.e. one that contains some randomness, turn out to be good candidates for PUFs. Because of this randomness ...
... system should not allow efficient extraction of the relevant properties of its interacting components by measurements. Physical systems that are produced by an uncontrolled production process, i.e. one that contains some randomness, turn out to be good candidates for PUFs. Because of this randomness ...
nonlinear optics in novel periodic media - Deep Blue
... composites having a manmade, three-dimensional, periodic cellular architecture designed to produce an optimized combination, not available in nature, of two or more responses to specific excitation [4]. In order for its structure to affect electromagnetic waves, a Metamaterial must have structural f ...
... composites having a manmade, three-dimensional, periodic cellular architecture designed to produce an optimized combination, not available in nature, of two or more responses to specific excitation [4]. In order for its structure to affect electromagnetic waves, a Metamaterial must have structural f ...
Predicting nonlinear properties of metamaterials from the linear
... so for dipole modes, the electric field and nonlinear polarization will add up constructively when integrated over the nanostructure. This eliminates one mechanism for the failure of Miller’s rule. To demonstrate this, we have measured the third harmonic emission (Supplementary Fig. 7a) from the sam ...
... so for dipole modes, the electric field and nonlinear polarization will add up constructively when integrated over the nanostructure. This eliminates one mechanism for the failure of Miller’s rule. To demonstrate this, we have measured the third harmonic emission (Supplementary Fig. 7a) from the sam ...
Lab 71 in TFFM08 Fiber Optics
... rarer medium would be bent away from the normal. In Figure 4, a series of rays in a dense medium are incident on an interface at different angles of incidence. Ray #1 is refracted at the interface to a rarer medium according to Snell's Law. Ray #2 is incident at an angle such that the refracted angl ...
... rarer medium would be bent away from the normal. In Figure 4, a series of rays in a dense medium are incident on an interface at different angles of incidence. Ray #1 is refracted at the interface to a rarer medium according to Snell's Law. Ray #2 is incident at an angle such that the refracted angl ...
Structural, Optical, Electrical and Thermal Characterizations of Pure
... number range 400 - 4000 cm–1. EDX patterns were recorded using JEOL-6360 Scanning Electron Microscope. Powder X-ray diffraction pattern was recorded using a Philips X pert PRO X-ray diffractometer with CuKα (λ = 1.5418Å) radiation. The optical properties of the grown crystal were studied using Shima ...
... number range 400 - 4000 cm–1. EDX patterns were recorded using JEOL-6360 Scanning Electron Microscope. Powder X-ray diffraction pattern was recorded using a Philips X pert PRO X-ray diffractometer with CuKα (λ = 1.5418Å) radiation. The optical properties of the grown crystal were studied using Shima ...
Direct spatiotemporal measurements of accelerating ultrashort
... The spatiotemporal profiles of the accelerating Bessel pulses were measured at five different z positions and for the decelerating Bessel pulse at nine positions. In all cases, we measured the complete spatiotemporal intensity and phase, but we show only the spatiotemporal intensities here, as this ...
... The spatiotemporal profiles of the accelerating Bessel pulses were measured at five different z positions and for the decelerating Bessel pulse at nine positions. In all cases, we measured the complete spatiotemporal intensity and phase, but we show only the spatiotemporal intensities here, as this ...
A study on optical absorption and constants of doped poly(ethylene
... their properties is extremely important not only for scientific knowledge but also for modern and advanced technological applications. Most polymeric materials are poor conductors of electricity because of the unavailability of large number of free electrons or ions to participate in the conduction p ...
... their properties is extremely important not only for scientific knowledge but also for modern and advanced technological applications. Most polymeric materials are poor conductors of electricity because of the unavailability of large number of free electrons or ions to participate in the conduction p ...
OKO guide to adaptive optics
... H vectors of the electromagnetic field and has a modulus related to the wavelength λ as k = 2π/λ; ω is the angular frequency related to the temporal frequency ν as ω = 2πν; E(r) describes the amplitude, and ϕ(r) = kr + ε(r) the phase of the oscillating field E. The surfaces of equal phase are known ...
... H vectors of the electromagnetic field and has a modulus related to the wavelength λ as k = 2π/λ; ω is the angular frequency related to the temporal frequency ν as ω = 2πν; E(r) describes the amplitude, and ϕ(r) = kr + ε(r) the phase of the oscillating field E. The surfaces of equal phase are known ...
All-optical signal processing based on self
... light in order to prevent or mitigate some of these impairments. The most common and commercially available way is to implement an opto-electronic polarization tracking solution [26-30]. These devices generally consist in linear polarization transformations followed by partial diagnostic associated ...
... light in order to prevent or mitigate some of these impairments. The most common and commercially available way is to implement an opto-electronic polarization tracking solution [26-30]. These devices generally consist in linear polarization transformations followed by partial diagnostic associated ...
Physical properties of silver oxide thin films by pulsed laser deposition
... chamber pressures), metallic silver can also be deposited on the substrate. This is an oversimplified picture of oxidation; more details of the oxidation process of silver oxide are given in [4]. It is known that the AgO phase is relatively stable at high oxygen pressures and at low temperatures. Th ...
... chamber pressures), metallic silver can also be deposited on the substrate. This is an oversimplified picture of oxidation; more details of the oxidation process of silver oxide are given in [4]. It is known that the AgO phase is relatively stable at high oxygen pressures and at low temperatures. Th ...
Self-assembly of three-dimensional photonic-crystals with
... do not have a full photonic bandgap because of their low index contrast, the self-assembled colloidal crystals provide an ideal template for the creation of porous structures with a full photonic bandgap by infiltration of the template by a material of high refractive index and then removal of the t ...
... do not have a full photonic bandgap because of their low index contrast, the self-assembled colloidal crystals provide an ideal template for the creation of porous structures with a full photonic bandgap by infiltration of the template by a material of high refractive index and then removal of the t ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
... volumes of tens to hundreds of milliliters. Measurements on liquid samples require either filling the entire cavity with liquid [7,8] or placing the sample into a part of the optical cavity, e.g., contained by a cuvette [9-12], or in a free flowing liquid sheet [13,14]. In the latter experiments the ...
... volumes of tens to hundreds of milliliters. Measurements on liquid samples require either filling the entire cavity with liquid [7,8] or placing the sample into a part of the optical cavity, e.g., contained by a cuvette [9-12], or in a free flowing liquid sheet [13,14]. In the latter experiments the ...
Stabler, Graham (2005) High resolution wide field surface plasmon
... the light to propagate laterally through the film before re-emitting, to allow this to happen the film must form part of a leaky waveguide structure. Conventionally this would mean that the film would be surrounded by cladding of lower refractive index, this again is rather impractical. Looking at t ...
... the light to propagate laterally through the film before re-emitting, to allow this to happen the film must form part of a leaky waveguide structure. Conventionally this would mean that the film would be surrounded by cladding of lower refractive index, this again is rather impractical. Looking at t ...
appel a projets recherche 2014 - lumat - Université Paris-Sud
... in space – down to the Å scale – to coherently excite electronic/nuclear wave packets in a controlled manner, and to probe their temporal evolution. These gradients are ideally provided by fully controlled photon beams, from the mid-IR to the XUV range: the manipulation of light pulses is therefore ...
... in space – down to the Å scale – to coherently excite electronic/nuclear wave packets in a controlled manner, and to probe their temporal evolution. These gradients are ideally provided by fully controlled photon beams, from the mid-IR to the XUV range: the manipulation of light pulses is therefore ...
Full-text PDF
... (10222 AsyV2 in mks units) and x s3d , 10212 esu units (10232 AsmyV2 in mks units). This gives the estimate m , 100. The value of h determines the importance of the competition between the nonlinearities. For the case of fixed a considered in this Letter k , Dk, which gives h , Dn ; jns2vd 2 nsvdj. ...
... (10222 AsyV2 in mks units) and x s3d , 10212 esu units (10232 AsmyV2 in mks units). This gives the estimate m , 100. The value of h determines the importance of the competition between the nonlinearities. For the case of fixed a considered in this Letter k , Dk, which gives h , Dn ; jns2vd 2 nsvdj. ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.