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High-efficiency blue generation by frequency doubling of
High-efficiency blue generation by frequency doubling of

... agreement with Eq. (4). The absolute efficiencies are all ,3 times lower than predicted when a nonlinear coeff icient deff ­ 20 pmyV is used; the reason for this discrepancy is not understood. For comparison, the well-known theoretical focusing dependence expected in the long-pulse or quasi-cw limit ...
PASSIVE MILLIMETER-WAVE IMAGING WITH EXTENDED DEPTH OF FIELD AND SPARSE DATA
PASSIVE MILLIMETER-WAVE IMAGING WITH EXTENDED DEPTH OF FIELD AND SPARSE DATA

... Over the past several years, imaging using millimeter wave (mmW) and terahertz technology has gained a lot of interest [1], [2], [3]. This interest is, in part, driven by the ability to penetrate poor weather and other obscurants such as clothes and polymers. Millimeter waves are high-frequency elec ...
Light Absorption, Reflection, and Transmission We have previously
Light Absorption, Reflection, and Transmission We have previously

... light and the nature of the atoms of the object. In this section of Lesson 2 we will discuss how and why light of certain frequencies can be selectively absorbed, reflected or transmitted. Atoms and molecules contain electrons. It is often useful to think of these electrons as being attached to the ...
A new integrated optical angular velocity sensor
A new integrated optical angular velocity sensor

Simultaneous calibration of optical tweezers spring constant and
Simultaneous calibration of optical tweezers spring constant and

... detection [1, 2], and accurate calibration of the tweezers’ spring constant then readily enabled the measurement of displacements and forces by individual biomolecular motors [3–5]. When the same laser beam is used for optical trapping and position detection, the exclusive experimental set-up discus ...
Optical simulation to enhance PV module encapsulation
Optical simulation to enhance PV module encapsulation

... at each moment of a clear day also considering dispersion (change of refractive indices with the optical wavelength) and multiple internal reflections inside and among the layers. To calculate and compare life-cycle yields, numerous instants (each 15 minutes) of actual transmittance, actual irradian ...
1 Introduction - Stony Brook Laser Teaching Center
1 Introduction - Stony Brook Laser Teaching Center

... This property was directly demonstrated by He et al. who focused an optical vortex beam onto microscopic particles: absorption of this light transfers OAM and thereby exerts a torque on the particles [2]. This ability to transfer angular momentum from light to a particle has important consequences i ...
Talk, ppt
Talk, ppt

Writing a superlattice with light forces
Writing a superlattice with light forces

... mask. The light field configurations that have been used to generate the different quadratic lattices will be presented in the following sections together with the AFM measurements. A detailed description of the experimental setup including the tunable laser system working on the chromium transition ...
Advanced Power TOPLED Plus - Osram Opto Semiconductors
Advanced Power TOPLED Plus - Osram Opto Semiconductors

... handling and optical characteristics of the LED is presented. In addition, processing information and a sample application are provided. ...
Module P6.3 Optical elements: prisms, lenses and spherical mirrors
Module P6.3 Optical elements: prisms, lenses and spherical mirrors

ee230-finaltalk
ee230-finaltalk

... The frequency comb (red) can be beat against an unknown frequency (blue). If the comb frequencies are known, then the unknown frequency can be determined. ...
Nondegenerate optical Kerr effect in semiconductors
Nondegenerate optical Kerr effect in semiconductors

... larger k). These terms, which contribute less than 10% to the degenerate n 2(w) for nwl/Eg < 0.95, were ignored in [5] but are included here for the nondegenerate n2 (w1 ; w2). As nw I Eg --+ 1, the contribution to n2 from the QSE is reduced significantly if these two terms are included. It must be ...
Grade 10 Academic Science – Optics (Physics) Laboratory
Grade 10 Academic Science – Optics (Physics) Laboratory

... 8. Use the ruler, connect the points and draw both the Incident Ray and Reflected Ray 9. Send a second ray of light through the arrowhead at O1 BUT in a different direction 10. Repeat Steps #10-11 11. Repeat Steps #6-10 through the line’s tail at O2 12. Remove the mirror 13. Use the dashed lines, ex ...
NONLINEAR OPTICS BASICS Units and Nomenclature
NONLINEAR OPTICS BASICS Units and Nomenclature

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... electromagnetic interference and low cost [1]. Optical control of microwave devices based on the photoconductivity effect. When a semiconductor is illuminated with a photon of the appropriate wavelength,an electron-hole pair is generated in the semiconductor substrate creating a variable load that c ...
2. Ring-laser gyroscopes (RLGs)
2. Ring-laser gyroscopes (RLGs)

IMPORTANT FEATURES FOR A RIGHT - pi
IMPORTANT FEATURES FOR A RIGHT - pi

... important for practice case of creating a small laser spot with uniform intensity profile just in focal plane of a lens. Realizing this approach requires solving of the inverse problem – which intensity distribution should be at the entrance of a lens in order to get a flattop spot in focal plane? T ...
Unit4
Unit4

... Amplifier Gain and Noise Figure Gain measurements Often done in large signal conditions – gain saturation Requires a high-power excitation source Characterization of noise Optical domain – measure the level of ASE coming from the amplifier Electrical domain – use a photodetector and an electrical sp ...
8.8 PPT
8.8 PPT

... We see that when x = 0.2 the convergence is very rapid, but when x = 3 it is somewhat slower. In fact, the farther x is from 0, the more slowly Tn(x) converges to ex. When using a Taylor polynomial Tn to approximate a function f, we have to ask the questions: How good an approximation is it? How lar ...
Hyperbolic Secant Squared Pulse Shape
Hyperbolic Secant Squared Pulse Shape

... With this wavelength range ...
PDF
PDF

Indexing terms/Keywords
Indexing terms/Keywords

... described by determining the mean and the variance of the state [9]. The physical implementation of the coherent states is very easy that can be given by a highly stabilized laser operating well above threshold. Thus, the coherent states became important as a tool for connecting quantum and classica ...
Observing Angular Deviations in the Specular Reflection of a Light
Observing Angular Deviations in the Specular Reflection of a Light

... he law of reflection states that when a plane wave (or light ray) falls on the boundary between two homogeneous media, the angle of incidence is equal to the angle of reflection. Plane waves are infinitely extended and thus cannot exist in nature. A beam is the closest approximation of a ray that we ...
What is Light?
What is Light?

... component colors through a prism. The different frequencies of different colors travel at different speeds when they enter a new medium, leading to different directions for each wave of different color. This is also called chromatic aberration and can be seen in lenses of inferior quality. Prisms us ...
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Harold Hopkins (physicist)

Harold Horace Hopkins FRS (1918–1994) was a renowned British physicist. His Wave Theory of Aberrations, (published by Oxford University Press 1950), is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: ""In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery.""
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