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About 10,000 papers for “Optics”

Electro‐optics and Acousto‐optics

2018

Electro-optics and acousto-optics are specialized photonics phenomena in which electroceramics play a prominent role. This chapter discusses the nature of light, some of the important properties that arise when light interacts with nonlinear crystals, define what is meant by the terms refractive index and birefringence. It describes briefly the two famous electro-optic effects which are Pockels effect and Kerr effect. The chapter presents a list of important electro-optic crystals with some of their properties and a list of materials that exhibit acousto-optic effect. Acousto-optic effect is used extensively for the measurement of ultrasound waves. It is also used for deflection, modulation, signal processing, and frequency shifting of light beams. Photorefractive effect is used to store temporary holograms that can be erased and recreated.

Cited by 0

Foundation of Ray Optics, Wave Optics, and Electromagnetic Optics

Partha Pratim Mondal, J Maxwell · 2021

Light has fascinated humans for centuries. This has led to the development of many theories, beginning from simple ray optics to the most complex quantum optics. The foundations of light-sheet microscopy lie in the domain of classical optics (i.e., ray optics, wave optics, and electromagnetic optics). Thus, it has become imperative to understand the fundamental principles governing light propagation and its effects and apply them to realizing advanced optical systems. Almost all research disciplines employ light to understand and analyze physical/biological processes. Light has become the backbone of modern optical systems. This introductory chapter explores different theories of light, beginning from simple and moving to complex as the need arises. Subsequent chapters use light as a template to understand light-sheet techniques that have taken the fields of imaging and microscopy by storm.

Cited by 2Open access

Electro-Optics and Nonlinear Optics

Vladimir Mitin, Viacheslav A. Kochelap, Mitra Dutta et al. · Cambridge University Press eBooks · 2019

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Cited by 1

Imaging Optics vs. Illumination Optics

Haiyin Sun · SPIE eBooks · 2026

Many optical systems can be categorized into two groups: imaging optics, such as camera lenses, and illumination optics, such as car head lights. Compared with illumination optics, imaging optics are more widely used and in general are more complex, require higher accuracy in fabrication and alignment of the optical components used, and attract more attention.

Cited by 0

Defense Optics and Electro-Optics

George J. Simonis, Gary L. Wood, Zoltan G. Sztankay et al. · 2017

Optics and electro-optics (EO) have played an important role in warfare throughout the history of mankind (for purposes of this discussion the terms “electro-optics,” “optics,” and “light” will be used to encompass visible, infrared, and ultraviolet wavelengths). In many periods of conflict these technologies have been critical determinants of the outcome of the conflict. A primary reason for the early impact of optics on warfare is that by far the largest amount of data input to the human brain regarding its surroundings is through the eyes. They quickly present enormous amounts of information to the brain due to the massive parallelism of these human imaging sensors as well as to the large dynamic range, angular resolution, and color acuity of the eyes. It is estimated that at least 25% and perhaps as much as 40% of the human cortex is involved in visual function.1,2 It therefore comes as no surprise that any optics that can enhance the performance of the visual sensors of the warrior can provide a great advantage in situation awareness and functional war-fighting capabilities. The telescope was an early optical aid to the warrior that provided extension of visual acuity beyond normal distance and resolution. Binoculars allowed both eyes to be engaged and provided enhanced depth perception—especially if the two entrance-optic apertures were spaced further apart than normal eye spacing. This enhanced depth perception facilitated the three-dimensional fixing of target location and effective engagement of the target. One of the greatest technological developments of World War II was the Norden bombsight, which combined optical imaging functions with mechanical computations such that ballistic aiming of bombs could take into account airplane velocity and direction, elevation, wind speed, etc., and provide greatly improved bombing accuracy. The emergence of electro-optic means of image capture and display since World War II has made possible the use of a wide variety of remote platforms for image collection as well as the extension of imaging into spectral ranges beyond the response of the human eye. This has greatly enhanced the impact of imaging on defense activities. The rapid maturation of defense display technology has also introduced the means of presenting the warrior with a diversity of dense arrays of image and non-image data. Defense R&D is now immersed in an information-intensive age within which the timely collection and distribution of information to the defense user is a critical part of success on the battlefield. The battlefield display is the critical interface between the warrior and the extensive defense information network that is coming together.

Cited by 0

Optics

Mathieu, Jean Paul, ter Haar, D · CERN Document Server (European Organization for Nuclear Research) · 1975

Optics, Parts 1 and 2 covers electromagnetic optics and quantum optics. The first part of the book examines the various of the important properties common to all electromagnetic radiation. This part also studies electromagnetic waves; electromagnetic optics of transparent isotropic and anisotropic media; diffraction; and two-wave and multi-wave interference. The polarization states of light, the velocity of light, and the special theory of relativity are also examined in this part. The second part is devoted to quantum optics, specifically discussing the classical molecular theory of optical p

Cited by 0

Optics

HECHT, Eugene, ZAJAC, Alfred · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · 1974

Cited by 0

Optics

HECHT, Eugene, ZAJAC, Alfred · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · 1974

Cited by 0