Chapter 4 Optical Resonator
... • 2.2 Planar Mirror Resonators – Resonator Modes – The Resonator as a Spectrum Analyzer – Two- and Three-Dimensional Resonators • 2.3 Gaussian waves and its characteristics – The Gaussian beam ...
... • 2.2 Planar Mirror Resonators – Resonator Modes – The Resonator as a Spectrum Analyzer – Two- and Three-Dimensional Resonators • 2.3 Gaussian waves and its characteristics – The Gaussian beam ...
to Thin Section Microscopy - Mineralogical Society of America
... is important. The cross-hairs in the ocular, the directions of light polarization and the microscope axis are the main reference directions. The four cardinal points (and intermediate directions derived from those) are commonly used to express and distinguish directions, with no geographical meaning ...
... is important. The cross-hairs in the ocular, the directions of light polarization and the microscope axis are the main reference directions. The four cardinal points (and intermediate directions derived from those) are commonly used to express and distinguish directions, with no geographical meaning ...
The orbital angular momentum of light: Genesis and
... was singled out, concluding that this term contributes to the mechanical properties of light with terms that are similar to those arising from OAM (for example driving an orbital motion of the particles around the beam axis). In ref. [14], the possibility was explored of discerning the OAM and SAM o ...
... was singled out, concluding that this term contributes to the mechanical properties of light with terms that are similar to those arising from OAM (for example driving an orbital motion of the particles around the beam axis). In ref. [14], the possibility was explored of discerning the OAM and SAM o ...
Continuous-wave optical parametric oscillators and frequency conversion sources from
... Ebrahim-Zadeh for his guidance, advice, and invaluable ideas, without which this thesis would not have been possible. He has not only supervised me, but has also provided me the enourmous encouragement and support, that gave me enthusiasm and confidence to face a new challenge at any time. His vast ...
... Ebrahim-Zadeh for his guidance, advice, and invaluable ideas, without which this thesis would not have been possible. He has not only supervised me, but has also provided me the enourmous encouragement and support, that gave me enthusiasm and confidence to face a new challenge at any time. His vast ...
Inverse Problems in Astronomical Adaptive Optics
... The term adaptive optics (AO) refers to optical systems that adapt in real time to compensate for distorting effects introduced along the propagation path between a light source and a receiver. In ground-based astronomy, light from distant objects is distorted by the effects of turbulence as it prop ...
... The term adaptive optics (AO) refers to optical systems that adapt in real time to compensate for distorting effects introduced along the propagation path between a light source and a receiver. In ground-based astronomy, light from distant objects is distorted by the effects of turbulence as it prop ...
Concentration effect of carbon nanotube based saturable
... pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlinear element may be either a semiconductor saturable absorber mirror (SESAM) [1] or a ...
... pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlinear element may be either a semiconductor saturable absorber mirror (SESAM) [1] or a ...
Heidelberg Retina Tomograph und Papille
... from each instrument: OCT thickness at the 5-o'clock inferior temporal position (mean +/- SE, 0.87 +/- 0.04), HRT mean height contour in the nasal inferior region (mean +/- SE, 0.86 +/- 0.04), and GDx linear discriminant function (mean +/- SE, 0.84 +/- 0.04). Twelve HRT, 2 GDx, and 9 OCT parameters ...
... from each instrument: OCT thickness at the 5-o'clock inferior temporal position (mean +/- SE, 0.87 +/- 0.04), HRT mean height contour in the nasal inferior region (mean +/- SE, 0.86 +/- 0.04), and GDx linear discriminant function (mean +/- SE, 0.84 +/- 0.04). Twelve HRT, 2 GDx, and 9 OCT parameters ...
Study on the Sensing Coating of the Optical Fibre CO2 Sensor
... They can be used for sample illumination and signal reception or they can be sensors per se by using special active fibre coatings, which are sensitive to the analysed substance. The most straightforward method of chemical analysis is a measurement of the absorption. It is especially useful for meas ...
... They can be used for sample illumination and signal reception or they can be sensors per se by using special active fibre coatings, which are sensitive to the analysed substance. The most straightforward method of chemical analysis is a measurement of the absorption. It is especially useful for meas ...
Spherical aberration compensation plates
... new alternative. Let us consider a plastic aspheric lens operating at F/3.3 to focus green light onto a detector. The amount of light provides feedback for some fabrication process. The manufacturing engineer realizes that monitoring the different polarizing states will provide increased fidelity to ...
... new alternative. Let us consider a plastic aspheric lens operating at F/3.3 to focus green light onto a detector. The amount of light provides feedback for some fabrication process. The manufacturing engineer realizes that monitoring the different polarizing states will provide increased fidelity to ...
Numerical study of all-optical slow-light delays via
... One advantage of using an amplifying resonance due to stimulated scattering is that the resonance can be created at any wavelength through a simple change of the pump wavelength. The use of a single-mode optical fiber as the medium for SRS or SBS may offer additional advantages, ...
... One advantage of using an amplifying resonance due to stimulated scattering is that the resonance can be created at any wavelength through a simple change of the pump wavelength. The use of a single-mode optical fiber as the medium for SRS or SBS may offer additional advantages, ...
Precision Engineering Periodic error calculation from spectrum analyzer data
... initial phase values are considered. Significant experimental results are presented which verify the new approach. © 2009 Elsevier Inc. All rights reserved. ...
... initial phase values are considered. Significant experimental results are presented which verify the new approach. © 2009 Elsevier Inc. All rights reserved. ...
YZM NI
... fibre and as sensor substrate to avoid any extra launching or collection optics; for example, converging lenses, special holders, etc. Due to the same cost reduction policy, instead of a laser diode, an infrared light emitting diode (LED) with a central wavelength of 960 nm is used as illuminating mo ...
... fibre and as sensor substrate to avoid any extra launching or collection optics; for example, converging lenses, special holders, etc. Due to the same cost reduction policy, instead of a laser diode, an infrared light emitting diode (LED) with a central wavelength of 960 nm is used as illuminating mo ...
Polarization of Light - University of Hawaii
... Polaroid-type polarimeter for circular polarimetry • Polaroids are not sensitive to circular polarization, so convert circular polarization to linear first, by using a quarter-wave plate • Polarimeter now uses a quarter-wave plate and a polaroid • Same disadvantages as before ...
... Polaroid-type polarimeter for circular polarimetry • Polaroids are not sensitive to circular polarization, so convert circular polarization to linear first, by using a quarter-wave plate • Polarimeter now uses a quarter-wave plate and a polaroid • Same disadvantages as before ...
Light manipulation with encoded plasmonic nanostructures Chenglong Zhao , Jiasen Zhang
... through a metal film. The slit functions as a SPP line source and SPPs are launched symmetrically from both sides of the slit with normal illumination. A Bragg reflection grating fabricated next to the slit as illustrated in the inset of Figure 4a can be used to achieve unidirectional SPP excitation ...
... through a metal film. The slit functions as a SPP line source and SPPs are launched symmetrically from both sides of the slit with normal illumination. A Bragg reflection grating fabricated next to the slit as illustrated in the inset of Figure 4a can be used to achieve unidirectional SPP excitation ...
Nonlinear polarization effects in optical fibers: polarization attraction
... is also responsible for leading to both spatial (or longitudinal) [6–10] as well as temporal [11] polarization instabilities and chaos. The general spatiotemporal stability of the nonlinear polarization eigenarrangements (or eigenpolarizations) which remain unchanged upon propagation in a nonlinear ...
... is also responsible for leading to both spatial (or longitudinal) [6–10] as well as temporal [11] polarization instabilities and chaos. The general spatiotemporal stability of the nonlinear polarization eigenarrangements (or eigenpolarizations) which remain unchanged upon propagation in a nonlinear ...
Sc 8 Unit 3 Textbook
... wash out our view of the skies at night. That is why many observatories, such as the one shown in Figure 3.3, are located far from urban areas. However, some communities are taking steps to conserve light energy. For example, new types of streetlights are designed to direct their light downward, so ...
... wash out our view of the skies at night. That is why many observatories, such as the one shown in Figure 3.3, are located far from urban areas. However, some communities are taking steps to conserve light energy. For example, new types of streetlights are designed to direct their light downward, so ...
Femtosecond Laser Pulses: Linear Properties
... shrunk by six orders of magnitude from the nanosecond regime to the femtosecond regime. Nowadays femtosecond pulses in the range of 10 fs and below can be generated directly from compact and reliable laser oscillators and the temporal resolution of measurements has outpaced the resolution even of mo ...
... shrunk by six orders of magnitude from the nanosecond regime to the femtosecond regime. Nowadays femtosecond pulses in the range of 10 fs and below can be generated directly from compact and reliable laser oscillators and the temporal resolution of measurements has outpaced the resolution even of mo ...
Optically Pumped Solid-State Lasers
... when doped into a large number of host crystals or glasses. In a separate class of solid-state lasers — the so-called stoichiometric lasers the active ion is not an impurity dopant but is an intrinsic part of the lattice. These lasers have not to date achieved significant importance and we will not ...
... when doped into a large number of host crystals or glasses. In a separate class of solid-state lasers — the so-called stoichiometric lasers the active ion is not an impurity dopant but is an intrinsic part of the lattice. These lasers have not to date achieved significant importance and we will not ...
1 - Foundation for Research and Technology
... extended the Finite Difference Time Domain (FDTD) code to lossy and to dispersive materials, we developed an inversion of the scattering data procedure, which enables to extract effective parameters (ε and μ) from the transmission data for chiral metamaterials, and we pursued the Microwave Studio, a ...
... extended the Finite Difference Time Domain (FDTD) code to lossy and to dispersive materials, we developed an inversion of the scattering data procedure, which enables to extract effective parameters (ε and μ) from the transmission data for chiral metamaterials, and we pursued the Microwave Studio, a ...
Refractive-Index-Matched Indium--Tin
... due to optical loss mechanisms at each component, less than 5% of total light output from the BLU light source is usually available at the screen.1) The LC is sandwiched between two indium–tin-oxide (ITO) electrodes which are used to induce a bias to the LC. The top and the bottom ITO electrodes sho ...
... due to optical loss mechanisms at each component, less than 5% of total light output from the BLU light source is usually available at the screen.1) The LC is sandwiched between two indium–tin-oxide (ITO) electrodes which are used to induce a bias to the LC. The top and the bottom ITO electrodes sho ...
EXPERIMENT 06 Helium Neon Laser
... If we look at Fig. 1 we can see that the 21S0 is slightly below the 3s level of the neon. However, the additional thermal energy kT is sufficient to overcome this gap. As already mentioned, the lifetime of the s-states of the neon are approximately 10 times longer as those of the pstates. An immedia ...
... If we look at Fig. 1 we can see that the 21S0 is slightly below the 3s level of the neon. However, the additional thermal energy kT is sufficient to overcome this gap. As already mentioned, the lifetime of the s-states of the neon are approximately 10 times longer as those of the pstates. An immedia ...
Optical Fiber Sensors Guide
... accomplished by varying the amplitude of the coupling coefficient along the length of the grating. For short-period gratings fabricated in optical fibers by laser sidewriting techniques, a method used to apodise the response consists in exposing the optical fiber with the interference pattern formed ...
... accomplished by varying the amplitude of the coupling coefficient along the length of the grating. For short-period gratings fabricated in optical fibers by laser sidewriting techniques, a method used to apodise the response consists in exposing the optical fiber with the interference pattern formed ...
Modeling and simulation of surface profile forming process of
... Another example of applications of micromirrors is for remote temperature sensing [7]. This thermal sensing chip consists of bimaterial cantilevers and micromachined micromirrors. When heated by an incident thermal radiation, the bimaterial cantilevers will deform due to thermal stress, which is a ...
... Another example of applications of micromirrors is for remote temperature sensing [7]. This thermal sensing chip consists of bimaterial cantilevers and micromachined micromirrors. When heated by an incident thermal radiation, the bimaterial cantilevers will deform due to thermal stress, which is a ...
Optics and Quantum Electronics - Research Laboratory of Electronics
... Figure 1: Schematic drawing of layer sequence for various dielectric mirrors: a) standard quarter wave Bragg mirror, b) simple chirped mirror, c) double chirped mirror (DCM). We have recently developed an analytic theory for the design of dispersion compensating mirrors and mirror pairs [4, 5, 8, 9] ...
... Figure 1: Schematic drawing of layer sequence for various dielectric mirrors: a) standard quarter wave Bragg mirror, b) simple chirped mirror, c) double chirped mirror (DCM). We have recently developed an analytic theory for the design of dispersion compensating mirrors and mirror pairs [4, 5, 8, 9] ...
Optical Sources - BYU -- ECEn 466 Course Information
... – Larger propagation length – Travel farther into the cladding – Speed increases with distance away from the core (decreasing index of refraction) – Relative difference in propagation speed is less ...
... – Larger propagation length – Travel farther into the cladding – Speed increases with distance away from the core (decreasing index of refraction) – Relative difference in propagation speed is less ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.