Enhanced visualization of choroidal vessels using ultrahigh
... As demonstrated in Fig. 1, ophthalmic ultrahigh resolution OCT operating in the ~800 nm wavelength range does not provide sufficient access to the choroid when the RPE layer is intact. Considering that absorption of light from melanin, the major chromophore in the RPE, decreases monotonically with i ...
... As demonstrated in Fig. 1, ophthalmic ultrahigh resolution OCT operating in the ~800 nm wavelength range does not provide sufficient access to the choroid when the RPE layer is intact. Considering that absorption of light from melanin, the major chromophore in the RPE, decreases monotonically with i ...
optical fiber communication
... Because GaAsP LEDs operate at a longer wavelength than GaAs LEDs (1.3 micrometers vs. ...
... Because GaAsP LEDs operate at a longer wavelength than GaAs LEDs (1.3 micrometers vs. ...
INFLUENCE OF ILLUMINATION ON THE OPTICAL BANDGAP
... the samples at an angle of light incidence of 50o. The optical bandgap energy (Eg) values were determined from the absorption coefficient (α) evaluated from the SE data analysis. The change of the optical bandgap energy with the time was traced by periodical measururements performed on films leaved ...
... the samples at an angle of light incidence of 50o. The optical bandgap energy (Eg) values were determined from the absorption coefficient (α) evaluated from the SE data analysis. The change of the optical bandgap energy with the time was traced by periodical measururements performed on films leaved ...
Optical Fiber Communication
... Because GaAsP LEDs operate at a longer wavelength than GaAs LEDs (1.3 micrometers vs. 0.81-0.87 micrometers), their output spectrum is wider by a factor of about 1.7. ...
... Because GaAsP LEDs operate at a longer wavelength than GaAs LEDs (1.3 micrometers vs. 0.81-0.87 micrometers), their output spectrum is wider by a factor of about 1.7. ...
Adaptive Optics and the cone mosaic
... The next generation of AO is AOSLO & AO-OCT. These two new methods aim to address the original problems Williams and colleagues faced in early retinal AO. Once the subject is properly placed, wavefront correction and imaging takes place. A laser is collimated and then reflected off of a beam-splittin ...
... The next generation of AO is AOSLO & AO-OCT. These two new methods aim to address the original problems Williams and colleagues faced in early retinal AO. Once the subject is properly placed, wavefront correction and imaging takes place. A laser is collimated and then reflected off of a beam-splittin ...
Criteria for Optical Systems: Optical Path Difference • Optical Path
... Absorbing Solids • Beam absorbed as it enters the material • For uniform material follows Beer Lambert law I ( z ) = I 0 exp( −α z ) where α = β = absorption coefficient (cm-1) z = depth into material • Absorption coefficient dependent on wavelength, material & intensity • High powers can get multi ...
... Absorbing Solids • Beam absorbed as it enters the material • For uniform material follows Beer Lambert law I ( z ) = I 0 exp( −α z ) where α = β = absorption coefficient (cm-1) z = depth into material • Absorption coefficient dependent on wavelength, material & intensity • High powers can get multi ...
Conference title, upper and lower case, bolded, 18 point
... Single-mode photonic waveguides, based on silicon typically have sub-micron cross-sectional dimensions. Either the waveguide thickness can be larger than width or vice-versa. Some of the advanced silicon photonic devices including modulators, waveguides, resonators, filters, grating couplers etc., a ...
... Single-mode photonic waveguides, based on silicon typically have sub-micron cross-sectional dimensions. Either the waveguide thickness can be larger than width or vice-versa. Some of the advanced silicon photonic devices including modulators, waveguides, resonators, filters, grating couplers etc., a ...
Nonconfocal Differential Interferometry Sensing Scheme for
... of the cantilever consists of using optical interferometry,1–6) capacitance,7,8) point-contact current-imaging,9) beam deflection,10–14) and magnetoresistive head.15) Constructing the force-sensing cantilever/tip device is a major task for the force microscope. Many chemistries and metallic modified c ...
... of the cantilever consists of using optical interferometry,1–6) capacitance,7,8) point-contact current-imaging,9) beam deflection,10–14) and magnetoresistive head.15) Constructing the force-sensing cantilever/tip device is a major task for the force microscope. Many chemistries and metallic modified c ...
Electrodynamics of Solids
... gained from the absorption, reflection, or transmission of electromagnetic radiation, including models which account for, or interpret, the experimental results. Together with other spectroscopic tools, notably photoelectron and electron energy loss spectroscopy, and Raman together with Brillouin sc ...
... gained from the absorption, reflection, or transmission of electromagnetic radiation, including models which account for, or interpret, the experimental results. Together with other spectroscopic tools, notably photoelectron and electron energy loss spectroscopy, and Raman together with Brillouin sc ...
Lecture 1 Light forces - Laboratoire de Physique des Lasers
... The research on cold atoms, molecules and ions has been triggered by the development of lasers [1]. In 1987, the first magneto-optical trap (MOT) was demonstrated [2]. Since then, the achievement of laser cooling [3, 4] and trapping enabled the fast development of ultra high resolution spectroscopy ...
... The research on cold atoms, molecules and ions has been triggered by the development of lasers [1]. In 1987, the first magneto-optical trap (MOT) was demonstrated [2]. Since then, the achievement of laser cooling [3, 4] and trapping enabled the fast development of ultra high resolution spectroscopy ...
Heterogenously integrated InP on Si microdisk lasers
... Theoretical, numerical and experimental results will be shown about the unidirectional behavior and it will be explained how unidirectional microdisk lasers can be a lot less sensitive to external reflections than other lasers. We will also show how such lasers can be used as optical signal regenera ...
... Theoretical, numerical and experimental results will be shown about the unidirectional behavior and it will be explained how unidirectional microdisk lasers can be a lot less sensitive to external reflections than other lasers. We will also show how such lasers can be used as optical signal regenera ...
Theory of relativistic optical harmonic generation
... 1Ref. 5 reported that the third-harmonic radiation was emitted in a cone in the forward direction, but the authors have subsequently determined that the cone-like nature of the emission was an experimental artifact. ...
... 1Ref. 5 reported that the third-harmonic radiation was emitted in a cone in the forward direction, but the authors have subsequently determined that the cone-like nature of the emission was an experimental artifact. ...
High-Repetition TDS System
... available and are used as easily operable terahertz spectroscopic systems aimed at researchers who are not specialists in terahertz waves. Although the fiber laser is smaller than the mode-locked Ti: sapphire laser, it is less flexible in respect of various properties, such as wavelength tunability, ...
... available and are used as easily operable terahertz spectroscopic systems aimed at researchers who are not specialists in terahertz waves. Although the fiber laser is smaller than the mode-locked Ti: sapphire laser, it is less flexible in respect of various properties, such as wavelength tunability, ...
Optical Gain Experiment Manual
... The Variable stripe length Method which has been demonstrated by Shaklee and Leheny in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the samp ...
... The Variable stripe length Method which has been demonstrated by Shaklee and Leheny in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the samp ...
Light at work: The use of optical forces for particle manipulation
... micro-manipulation techniques, comment on their features, and describe their interesting applications. The review should help researchers, especially those working outside of the field, to be inspired by these not yet widespread methods and consider their new applications. The article is organized a ...
... micro-manipulation techniques, comment on their features, and describe their interesting applications. The review should help researchers, especially those working outside of the field, to be inspired by these not yet widespread methods and consider their new applications. The article is organized a ...
Measured limits to contamination of optical
... Fluorel, which achieved only 2 3 1027 Torr because of the high outgassing load from the specimen. The specimens were prepared and handled carefully before being inserted into the test chambers. The fluoroelastomer specimen was a single piece of 3M-Fluorel 2176 170 durometer2 molded into a truncated ...
... Fluorel, which achieved only 2 3 1027 Torr because of the high outgassing load from the specimen. The specimens were prepared and handled carefully before being inserted into the test chambers. The fluoroelastomer specimen was a single piece of 3M-Fluorel 2176 170 durometer2 molded into a truncated ...
Lecture 26 - Auger at LAL
... NOTE: in Koschmieder equation the extinction coefficient is sum of extinction coefficients of all gases and particles, which attenuate light. NOTE: in Koschmieder equation the extinction coefficient is averaged over visible wavelengths, however it is often taken at about 550-nm wavelength. ...
... NOTE: in Koschmieder equation the extinction coefficient is sum of extinction coefficients of all gases and particles, which attenuate light. NOTE: in Koschmieder equation the extinction coefficient is averaged over visible wavelengths, however it is often taken at about 550-nm wavelength. ...
wavelength dependence of the light-induced index
... optical path length and thus the optical phase of light propagating through the irradiated arm. The change in optical phase is readily determined from the experimental data by using the fact that a change in the coupling ratio from 0% to 100% corresponds to an optical phase change of 7r. Thus the me ...
... optical path length and thus the optical phase of light propagating through the irradiated arm. The change in optical phase is readily determined from the experimental data by using the fact that a change in the coupling ratio from 0% to 100% corresponds to an optical phase change of 7r. Thus the me ...
Document
... Angle (t) between aberrated ray and the non- aberrated reference ray • Longitudinal ray aberration: focusing error = 1/z (diopters) = transverse aberration/ ray height at pupil ...
... Angle (t) between aberrated ray and the non- aberrated reference ray • Longitudinal ray aberration: focusing error = 1/z (diopters) = transverse aberration/ ray height at pupil ...
Review of paper entitled “Athermalization of optical instruments from
... This paper thoroughly investigates the requirements for athermalization of different materials in different types of systems. It also provides good references of coefficients for glasses, plastics, liquids, housings, and infrared materials to be used when designing or analyzing the athermalization o ...
... This paper thoroughly investigates the requirements for athermalization of different materials in different types of systems. It also provides good references of coefficients for glasses, plastics, liquids, housings, and infrared materials to be used when designing or analyzing the athermalization o ...
may11-96 as a Word 6.0 doc - Lyle School of Engineering
... For a critical angle to exist between two media with index n1 and n2, the light ray must be traveling from a low index to a high index, the index difference must greater than tan-1(n2/(n1 + n2)), the loss in the high index medium cannot exceed the loss in the low index medium, and/or d) the light ra ...
... For a critical angle to exist between two media with index n1 and n2, the light ray must be traveling from a low index to a high index, the index difference must greater than tan-1(n2/(n1 + n2)), the loss in the high index medium cannot exceed the loss in the low index medium, and/or d) the light ra ...
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.