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swept-frequency

The Coherence Collapse Regime of High Coherence Si/III V Lasers and the Use of Swept Frequency Semiconductor Lasers for Full Field 3D Imaging

The Coherence Collapse Regime of High Coherence Si/III V Lasers and the Use of Swept Frequency Semiconductor Lasers for Full Field 3D Imaging

... of frequency modulated continuous wave LIDAR [22], and high- resolution 3D imaging, typically for biomedical applications taking the name of optical coherence tomography (OCT) ...[23]. Swept source ranging ...

133

Swept-frequency feedback interferometry using terahertz frequency QCLs: a method for imaging and materials analysis

Swept-frequency feedback interferometry using terahertz frequency QCLs: a method for imaging and materials analysis

... We propose a new method for coherent imaging and materials analysis using a THz QCL feedback interferometer in reflection mode. At the heart of this scheme is the realization that a portion of the emitted THz radiation ...

13

Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser

Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser

... by frequency instability of the laser, caused by temperature and current ...in frequency drifts on the order of several MHz over time-scale of seconds [20, ...maximum frequency drift of ~10 ...

7

The Optoelectronic Swept-Frequency Laser and Its Applications in Ranging, Three-Dimensional Imaging, and Coherent Beam Combining of Chirped-Seed Amplifiers

The Optoelectronic Swept-Frequency Laser and Its Applications in Ranging, Three-Dimensional Imaging, and Coherent Beam Combining of Chirped-Seed Amplifiers

... The range resolution of an FMCW system describes its ability to tell apart reflections from closely spaced scatterers. In some imaging applications, such as profilometry, it is a priori known that there is only a single ...

177

High-contrast coherent terahertz imaging of porcine tissue via swept-frequency feedback interferometry

High-contrast coherent terahertz imaging of porcine tissue via swept-frequency feedback interferometry

... Abstract: There is considerable interest in the interrogation of biolog- ical tissue at terahertz (THz) frequencies, largely due to the contrast in the optical properties of different biological tissues which occur in ...

10

Resonant Behavior Measurements and Two-Dimensional Imaging of Small Conducting Spheres in CATR

Resonant Behavior Measurements and Two-Dimensional Imaging of Small Conducting Spheres in CATR

... on swept frequency RCS measurement system, low density foam column and proper data processing procedure, the resonance curves of conducting spheres with RCS below ...

11

A noninvasive rf probe for the study of ionization and dissociation processes in technological plasmas

A noninvasive rf probe for the study of ionization and dissociation processes in technological plasmas

... A swept frequency absorbance plasma diagnostic technique for measurement of self-resonance frequency, intrinsic plasma-tool distributed capacitance, radiative energy loss, and effective plasma ...

7

An Improved Design of 3D Swept-Volume Volumetric Display

An Improved Design of 3D Swept-Volume Volumetric Display

... Abstract—In this paper, we present a new design of a swept- volume 3D-360-degree display system with rotating LED panel. This system, which adopts the idea of modular design, is constituted of a mechanical part, a ...

8

Surface editing using swept surface 3D models

Surface editing using swept surface 3D models

... the pivotal step for creation of the representation. To create a meaningful swept surface, traditional skeleton is always the ideal choice. However, as the selected region is a cylinder-like open mesh, with ...

11

The Aerodynamic Analysis and Aeroelastic Tailoring of a Forward-Swept Wing

The Aerodynamic Analysis and Aeroelastic Tailoring of a Forward-Swept Wing

... PMARC is one such code previously used at North Carolina State University and has shown excellent agreement between theoretical and experimental pressure distributions when tested on a 45 degree aft-swept wing at ...

102

On the turbulent mean-flow at the leading edge of a swept wing

On the turbulent mean-flow at the leading edge of a swept wing

... chord length of 0.466m and was swept by 60º. It was mounted between the floor and ceiling of the test section of the T2 wind tunnel at the Handley Page Laboratory, City University London, as shown in Fig.1. The T2 ...

11

Frequency-Swept Pulses in Ultra-Wideline NMR

Frequency-Swept Pulses in Ultra-Wideline NMR

... respectively. Even with the higher-power Hartmann-Hahn match condition, achieving uniform polarization transfer over the breadth of the ca. 60 kHz pattern is challenging, as the spectral intensity at the ...

264

Novel perspectives on swept-source optical coherence tomography

Novel perspectives on swept-source optical coherence tomography

... Technologies for multimodal digital imaging of vitreoretinal diseases have improved the accuracy of diagnosis and the depth of the knowledge of the mechanisms of disease and their response to treatments. Optic coherence ...

11

Computational Prediction of Tip-Vortex of a Swept Wing

Computational Prediction of Tip-Vortex of a Swept Wing

... The coordinates of the vortex-core location are closely captured along the downstream of flow and the variation of the vortex flow quantities with different angle of [r] ...

9

Computational Study of Aspect-Ratio Effects on Swept-Wing Stall.

Computational Study of Aspect-Ratio Effects on Swept-Wing Stall.

... From Figure 2.5, three regions across the span of the wing were identified: Region A (2y/b < 0.2) – an inboard region influenced by the presence of the wing root, where the flow is more resistant to separation; Region ...

61

Labview Analysis Concepts Highlighted

Labview Analysis Concepts Highlighted

... The ITU-T V.34 recommendation contains specifications for a modem operating at data signaling rates up to 33,600 bits/s. It specifies that the spectrum for the line signal that transmits data conforms to the template ...

266

Swept wing aerodynamics at transonic speeds and at different turbulence levels

Swept wing aerodynamics at transonic speeds and at different turbulence levels

... with swept wings to attain higher critical Mach speeds which is very less in straight wing trainer ...Aircraft’s. Swept wings are preferred for its high lift to drag ratio low speed takeoff conditions and ...

9

Design and Structural Analysis of the Ribs and Spars of Swept Back Wing

Design and Structural Analysis of the Ribs and Spars of Swept Back Wing

... For a typical 150 seater regional aircraft we have analyzed the swept back wing components by FEM, stresses are within the allowable limits. Introducing the 3 spars with the designed thickness in our swept ...

6

EXTREME DRAG FORCES AND THE SURVIVAL OF WIND  AND WATER SWEPT ORGANISMS

EXTREME DRAG FORCES AND THE SURVIVAL OF WIND AND WATER SWEPT ORGANISMS

... The standard technique for measuring time-averaged drag in turbulent flow is as follows. The organism in question (or a model of it) is attached to a force transducer and placed in flow of known average mainstream ...

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Design and Stress Analysis of Swept Back Wing with Nastran and Patran

Design and Stress Analysis of Swept Back Wing with Nastran and Patran

... The swept back Wing is designed using (CATIA V5) software and the linear static structural analysis is performed through CAE (MSC NASTRAN PATRAN) software with satisfactory factor of safety and stiffness ...

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