beam propagation
Study on Turbulence Effects for Beam Propagation in Turbulent Atmosphere
... The scintillations and the angle-of-arrival fluctuations are more significant effects of atmospheric turbulence on the beam propagation. The effect of the angle of arrival may increase the field-of-view ...
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EXPERIMENTAL VERIFICATION OF THE TURBULENT EFFECTS ON LASER BEAM PROPAGATION IN SPACE
... the propagation of a laser beam through the atmosphere (Tatarskii, ...laser beam propa- gation (Baak, 1969; Prod’homme, ...laser beam that can lead to beam distortion (Chatterjee and ...
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ANALYSIS OF DIRECTIONAL COUPLER WITH SYMMETRICAL ADJACENT PARALLEL WAVEGUIDES USING BEAM PROPAGATION METHOD
... verified. Beam propagation method with paraxial approximation along with coupled mode theory is used for numerical modelling of wave propagation through slab ...
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Gaussian Beam Propagation through a Metamaterial Lens
... a = c f and give our results in Figure 4. Figure 4(a) corresponds to the beam propagation in air while Figure 4(b) is related to the beam propagation through a metamaterial lens. Figure 4(c) ...
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New method for nonparaxial beam propagation
... Abstract- A new method for solving the wave equation is presented, which is non- paraxial and can be applied to wide-angle beam propagation. It shows very good stability characteristics in the sense that ...
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The beam propagation method used for the design of an integrated optical coupler
... highest propagation constant, and its contribution to the field has the highest growth rate and dominates all other modes after a certain distance, leaving only the field ...
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Non-paraxial Split-step Finite-difference Method for Beam Propagation
... the propagation step-size is smaller than for the step index waveguide in the example given ...in propagation is similar to that obtained by Yamauchi et ...
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Finite Element Based Beam Propagation Analysis of Optical Semiconductor Devices
... Conclusion and Future Works Chapter 8 8.0 Conclusions and Future Works 8.1 Overview of the Work The main objective of this research work was to develop further the Finite Element based B[r] ...
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Ultrasonic Beam Propagation in Cast Stainless Steel
... A consequence is that the ultrasonic wave speeds vary with direction, which in turn leads to such phenomena as beam skewing and excess beam divergence.. The materials, anisotropic or not[r] ...
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Directivity Investigation of two Annular Phased Array Transducers
... 2D beam propagation profiles for each individual element for ...the beam computation ...the beam propagation without the need of a ...on-axis beam propagation plot (see ...
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Investigation on Propagation Characteristics of Super-Gaussian Beam in Highly Nonlocal Medium
... Gaussian beam (n = 1) to flat top beam (higher order SG ...SG beam and its possible applications can be found in ...stable propagation for Gaussian beam where as propagation of ...
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Spatial Soliton Pairing of Two Cylindrical Beams in Saturable Nonlinear Media
... of propagation could be obtained in a little time, for example, the figures like 2, 5–8 have been obtained in the time of the order of a minute with an ordinary processor, moreover, it requires ignorable memory ...
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Visualization of Shear Cracks in a Reinforced Concrete Beam using the Digital Image Correlation
... the beam is shown in Figure 2. The beam was tested under three-point bending and placed onto two roller supports, with the span between the supports being 640 mm thereby giving a shear ...
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EFFECT OF VARIATION OF LASER PARAMETERS ON FREQUENCY SHIFT IN TRANSPARENT BULK MEDIA
... laser beam due to the interaction between plasma formed in focal volume of sample and ultra-short intense laser ...normalized propagation distance, for increasing normalized spot sizes of ...and beam ...
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Focusing of Dark Hollow Gaussian Electromagnetic Beams in a Plasma with Relativistic-Ponderomotive Regime
... for propagation of TEM 01 mode of the beam, considering diffraction and the saturating nature of the non-linearity, has been ...the propagation characteristics of a hollow Gaussian beam in the ...
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... to be easily adapted once fabricated. Thus, it becomes important to define the actual spreading of their optical emission, both in terms of modal distribution and of power dispersion. This would allow for designing the ...
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Variation of Crack Propagation in Cantilever Beam under Force Vibration
... cantilever beam over a base made of bricks and ...the beam to generate different ...the beam to observe the frequency of vibration along the beam length with the help of ...
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Performances of Free-Space Optical Communication System Over Strong Turbulence
... Performansi Sistem Komunikasi Optik Media Atmosfir (Free-Space Optical Communication) dalam Kondisi Turbulensi Kuat. Kami melaporkan eksperimen sistem komunikasi optik media atmosfir (FSOC) menggunakan tube ...
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Analysis of Fatigue Crack Propagation Life in a Single Edged Notched Beam
... and Propagation Life Prediction of Materials” International Conference on Mechanical, Electronics and Mechatronics Engineering (ICMEME'2012) 17-18, March ...
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On the Stabilization for Laminated Beam with Infinite Memory and Different Speeds of Wave Propagation
... In this paper, for a wide class of relaxation function, we intend to study the general decay rate of the solutions for problem (1.1) under non-equal wave speeds. For this purpose, we have two key points in the proofs. On ...
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