Étendue and spectral resolution
... The finesse is a measure of the spectral resolution that can be achieved with an interferometer for a specified FSR – which is determined by experimental requirements. Ideally the interferometer plates should be illuminated by parallel rays of light and these rays should be in the wedge plane of the ...
... The finesse is a measure of the spectral resolution that can be achieved with an interferometer for a specified FSR – which is determined by experimental requirements. Ideally the interferometer plates should be illuminated by parallel rays of light and these rays should be in the wedge plane of the ...
Catching the wave - Selected Topics in Quantum Electronics, IEEE
... and the EM mode. This was my first introduction to the coupled-mode point of view (which I would apply and reapply in my subsequent research) and was the topic of my first paper [2]. An immediate and key consequence of the coupled-mode theory was that a prerequisite for power exchange between intera ...
... and the EM mode. This was my first introduction to the coupled-mode point of view (which I would apply and reapply in my subsequent research) and was the topic of my first paper [2]. An immediate and key consequence of the coupled-mode theory was that a prerequisite for power exchange between intera ...
Soft-x-ray laser interferometry of a plasma with a tabletop 420
... great variety of dense plasmas. However, multilayer beam splitters cannot be developed for the wavelengths corresponding to some of these lasers at present, owing to the lack of materials with adequate optical constants. Alternatively, amplitude-division interferometers based on diffraction gratings ...
... great variety of dense plasmas. However, multilayer beam splitters cannot be developed for the wavelengths corresponding to some of these lasers at present, owing to the lack of materials with adequate optical constants. Alternatively, amplitude-division interferometers based on diffraction gratings ...
Overview
... Energy Exchange Between Parallel Disc’s What is the flux from a Lambertain source of radiance L, onto a receive at distance r? We will first use point source approximations…..that is, we are at least 10 x the radius of the source (i.e., 1% error). ...
... Energy Exchange Between Parallel Disc’s What is the flux from a Lambertain source of radiance L, onto a receive at distance r? We will first use point source approximations…..that is, we are at least 10 x the radius of the source (i.e., 1% error). ...
Laser III - Universiti Sains Malaysia
... •The beam therefore can be spread out to the surrounding region – mode volume •Vigorous pumping is therefore needed to enhance lasing •The threshold current for the pumping action exceeds 400Amm-2 ...
... •The beam therefore can be spread out to the surrounding region – mode volume •Vigorous pumping is therefore needed to enhance lasing •The threshold current for the pumping action exceeds 400Amm-2 ...
Lecture 18
... (A) the plasma membrane labeled with DiI in a hippocampal neuron (15 sec) (B) mitochondria labeled with MitoTracker Red in a BS-C-1 cell (10 sec) (C) the ER labeled with ER-Tracker Red in a BS-C-1 cell (10 sec) (D) lysosomes labeled with LysoTracker Red in a BS-C-1 cell (1 sec) ...
... (A) the plasma membrane labeled with DiI in a hippocampal neuron (15 sec) (B) mitochondria labeled with MitoTracker Red in a BS-C-1 cell (10 sec) (C) the ER labeled with ER-Tracker Red in a BS-C-1 cell (10 sec) (D) lysosomes labeled with LysoTracker Red in a BS-C-1 cell (1 sec) ...
PDF
... cholesteric pitch p can be modified by varying concentration of the additive and is often within the range from 100 nm to 100 µm, thus enabling formation of periodic structures for photonic applications in ultraviolet, visible, and infrared spectral ranges. When CLCs are confined in cells with diffe ...
... cholesteric pitch p can be modified by varying concentration of the additive and is often within the range from 100 nm to 100 µm, thus enabling formation of periodic structures for photonic applications in ultraviolet, visible, and infrared spectral ranges. When CLCs are confined in cells with diffe ...
Experimental studies of far-field superlens for sub-diffractional optical imaging
... first proposed in 2000 [12]. Rather than just detecting evanescent waves before decaying as in NSOM, superlens can enhance evanescent waves to compensate the decay which leads to a high resolution image. The superlens theory was then experimentally proved with a wide spectrum of frequency in compos ...
... first proposed in 2000 [12]. Rather than just detecting evanescent waves before decaying as in NSOM, superlens can enhance evanescent waves to compensate the decay which leads to a high resolution image. The superlens theory was then experimentally proved with a wide spectrum of frequency in compos ...
... SPM leads to symmetric spectral broadening around ωo, whereas the self steepening term that leads to optical shock results in asymmetric spectral broadening of the pulse. Selfsteepening can be explained by the intensity-dependence of the group velocity [1]. As the intensity of a pulse increases from ...
CP1: Investigation into the Feasibility of a Three Axis
... described by Thomas Young [6] which, by definition, is the degree to which two waves are able to interfere. Two waves with a constant phase difference with respect to one another are said to be completely coherent and can interfere maximally. A wave emitted from a single source has two types of cohe ...
... described by Thomas Young [6] which, by definition, is the degree to which two waves are able to interfere. Two waves with a constant phase difference with respect to one another are said to be completely coherent and can interfere maximally. A wave emitted from a single source has two types of cohe ...
Bistable localized emission states in a 200 μm broad
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
Automatic Absolute Distance Measurement with One Micrometer
... interferometer, external cavity diode laser (ECDL) with wavelength controller, monochrome camera, wavelength meter, motion controller and a computer, as is shown in Figure 2. To control the system components custom system software has been developed. This consists of several programs written in the ...
... interferometer, external cavity diode laser (ECDL) with wavelength controller, monochrome camera, wavelength meter, motion controller and a computer, as is shown in Figure 2. To control the system components custom system software has been developed. This consists of several programs written in the ...
1.1 Objectives
... The phenomena associated with self-focusing of laser beams have been investigated since laser invention [1]. This kind of nonlinear propagation of a wave in a transparent medium particularly depends on the transversal intensity profile and power of the laser beam. Self-focusing is self-induced (Kerr ...
... The phenomena associated with self-focusing of laser beams have been investigated since laser invention [1]. This kind of nonlinear propagation of a wave in a transparent medium particularly depends on the transversal intensity profile and power of the laser beam. Self-focusing is self-induced (Kerr ...
Principles and techniques of digital holographic microscopy
... optics of visible light for image formation, and was much easier and more developed compared to electron optics. He named the new imaging principle holography, for its ability to record the whole optical field [1–3]. The holography principle was immediately applied to recording and imaging by visibl ...
... optics of visible light for image formation, and was much easier and more developed compared to electron optics. He named the new imaging principle holography, for its ability to record the whole optical field [1–3]. The holography principle was immediately applied to recording and imaging by visibl ...
Holography
Holography is the science and practice of making holograms. Typically, a hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate optics. The hologram itself is not an image and it is usually unintelligible when viewed under diffuse ambient light. It is an encoding of the light field as an interference pattern of seemingly random variations in the opacity, density, or surface profile of the photographic medium. When suitably lit, the interference pattern diffracts the light into a reproduction of the original light field and the objects that were in it appear to still be there, exhibiting visual depth cues such as parallax and perspective that change realistically with any change in the relative position of the observer.In its pure form, holography requires the use of laser light for illuminating the subject and for viewing the finished hologram. In a side-by-side comparison under optimal conditions, a holographic image is visually indistinguishable from the actual subject, if the hologram and the subject are lit just as they were at the time of recording. A microscopic level of detail throughout the recorded volume of space can be reproduced. In common practice, however, major image quality compromises are made to eliminate the need for laser illumination when viewing the hologram, and sometimes, to the extent possible, also when making it. Holographic portraiture often resorts to a non-holographic intermediate imaging procedure, to avoid the hazardous high-powered pulsed lasers otherwise needed to optically ""freeze"" living subjects as perfectly as the extremely motion-intolerant holographic recording process requires. Holograms can now also be entirely computer-generated and show objects or scenes that never existed.Holography should not be confused with lenticular and other earlier autostereoscopic 3D display technologies, which can produce superficially similar results but are based on conventional lens imaging. Stage illusions such as Pepper's Ghost and other unusual, baffling, or seemingly magical images are also often incorrectly called holograms.