Gradient Index Optics at DARPA - Institute for Defense Analyses
... in Crete is more powerful and of far better quality than the Nimrud lens. Roman writers Pliny and Seneca refer to a lens used by an engraver in Pompeii possibly for magnification. The ancients perhaps used lenses for many purposes about which we are not aware. However, it is difficult to specify the ...
... in Crete is more powerful and of far better quality than the Nimrud lens. Roman writers Pliny and Seneca refer to a lens used by an engraver in Pompeii possibly for magnification. The ancients perhaps used lenses for many purposes about which we are not aware. However, it is difficult to specify the ...
Predicting the Appearance of Materials Using Lorenz
... in the same lighting environment which we can use to make a statistical model (this is image analysis). Or unless we have a physical model of the material and lighting environment that we can use to predict the picture (this is computer graphics). The purpose of this paper is to show how to construc ...
... in the same lighting environment which we can use to make a statistical model (this is image analysis). Or unless we have a physical model of the material and lighting environment that we can use to predict the picture (this is computer graphics). The purpose of this paper is to show how to construc ...
Integrated Optics
... • Integrated optics is a system of light-controlling components combined into a single device. The ultimate aim is to create miniature optical circuits similar to the silicon chips that have revolutionized the electronics industry. The advantage of the optical approach however is that data can be pr ...
... • Integrated optics is a system of light-controlling components combined into a single device. The ultimate aim is to create miniature optical circuits similar to the silicon chips that have revolutionized the electronics industry. The advantage of the optical approach however is that data can be pr ...
2. Measurement of refractive index of liquids using fiber optic
... The paper describes a technique to determine the refractive index of liquids using reflective type fiber optic displacement sensor. The sensor consists of two multimode step index fibers and a mirror. The output light intensity from the receiving fiber is measured as a function of displacement of th ...
... The paper describes a technique to determine the refractive index of liquids using reflective type fiber optic displacement sensor. The sensor consists of two multimode step index fibers and a mirror. The output light intensity from the receiving fiber is measured as a function of displacement of th ...
Chromatic Dispersion in optical Communications
... metallic line and so it can be sent over longer distances without repeaters optical transmission allows much greater data capacity optical signal is completely electrically isolated and it is resistant to RF interference and crosstalk Characteristics of the optical transmission system are determ ...
... metallic line and so it can be sent over longer distances without repeaters optical transmission allows much greater data capacity optical signal is completely electrically isolated and it is resistant to RF interference and crosstalk Characteristics of the optical transmission system are determ ...
Zemax, LLC Getting Started With OpticStudio 16
... design, analysis, optimization, tolerancing, physical optics, non-sequential optical system design, polarization, thin-film modeling and mechanical CAD Import/Export in a single, easy-to-use package. Although OpticStudio is easy to use, optical system design is a very broad area of engineering. This ...
... design, analysis, optimization, tolerancing, physical optics, non-sequential optical system design, polarization, thin-film modeling and mechanical CAD Import/Export in a single, easy-to-use package. Although OpticStudio is easy to use, optical system design is a very broad area of engineering. This ...
Green's function formulation for third-harmonic generation microscopy
... second-harmonic generation microscopy,1–3 coherent antiStokes Raman scattering (CARS) microscopy,4–6 and third-harmonic generation (THG) microscopy7–12 for biology and materials science. THG microscopy was demonstrated by Barad et al. in 1997.7 This technique has been applied for imaging transparent ...
... second-harmonic generation microscopy,1–3 coherent antiStokes Raman scattering (CARS) microscopy,4–6 and third-harmonic generation (THG) microscopy7–12 for biology and materials science. THG microscopy was demonstrated by Barad et al. in 1997.7 This technique has been applied for imaging transparent ...
Silica-Based Highly Nonlinear Fibers and Their Applications
... probe light (signal) and high power pump lights are launched into an optical fiber, a new light (idler) is generated at a frequency fidler. fidler = fp1 + fp2 – fprobe, where fp1 and fp2 are pump frequencies, and fprobe is a probe frequency. FWM is used for various applications including wavelength ...
... probe light (signal) and high power pump lights are launched into an optical fiber, a new light (idler) is generated at a frequency fidler. fidler = fp1 + fp2 – fprobe, where fp1 and fp2 are pump frequencies, and fprobe is a probe frequency. FWM is used for various applications including wavelength ...
Finite-energy, accelerating Bessel pulses
... Bessel beams are a particularly interesting class of light beams first investigated in detail by Durnin et al. [5] and currently at the attention of a number of research areas ranging from extreme nonlinear optics [6] to particle trapping [7] (see also [8] and references therein). The ideal Bessel b ...
... Bessel beams are a particularly interesting class of light beams first investigated in detail by Durnin et al. [5] and currently at the attention of a number of research areas ranging from extreme nonlinear optics [6] to particle trapping [7] (see also [8] and references therein). The ideal Bessel b ...
Flat Surface Testing
... A 1 meter diameter flat is being tested using a Ritchey Common test at an angle of incidence of 45°. A Frankenian widget is being used to measure the distance between the S and T foci and hence determine the radius of curvature of the so called flat. While we do not study Frankenian widgets in this ...
... A 1 meter diameter flat is being tested using a Ritchey Common test at an angle of incidence of 45°. A Frankenian widget is being used to measure the distance between the S and T foci and hence determine the radius of curvature of the so called flat. While we do not study Frankenian widgets in this ...
Photoacoustic microscopy with 2
... knowledge that is able to image individual red blood cells in microvessels without optical clearing. The 2-m PAM uses safe radiation for photoacoustic excitation. The pulse energy was measured to be 10 nJ at the exit of the single-mode delivery fiber. If the focal plane is tuned to 100 m below the ...
... knowledge that is able to image individual red blood cells in microvessels without optical clearing. The 2-m PAM uses safe radiation for photoacoustic excitation. The pulse energy was measured to be 10 nJ at the exit of the single-mode delivery fiber. If the focal plane is tuned to 100 m below the ...
Apparatus and method for producing holograms with acoustic waves
... method and apparatus for producing holograms. Another object is the provision of method and ap paratus for producing holograms of objects located in a medium substantially opaque to electromagnetic radiation. Another object is the provision of method and ap paratus for producing holograms with acous ...
... method and apparatus for producing holograms. Another object is the provision of method and ap paratus for producing holograms of objects located in a medium substantially opaque to electromagnetic radiation. Another object is the provision of method and ap paratus for producing holograms with acous ...
Optical aberration
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An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.