Results 21 to 30 of about 311,588 (304)
Sensitivity advantage of swept source and Fourier domain optical coherence tomography [PDF]
, 2003 We present theoretical and experimental results which demonstrate the superior sensitivity of swept source (SS) and Fourier domain (FD) optical coherence tomography (OCT) techniques over the conventional time domain (TD) approach. We show that SS- and FD-
Choma, Michael A. +3 more
core +1 more source
Development of Swept-sine Excitation Control Method to Minimize the FRF Measurement Error
Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2012 Shaker excitation in FRF (Frequency Response Function) measurement of a testing system can be controlled by using swept-sine signal source in a signal generator and it is called with swept-sine excitation.
Asmara Yanto, Zainal Abidin
doaj +1 more source
Fiber-based swept-source terahertz radar
Optics Letters, 2010 We demonstrate an all-terahertz swept-source imaging radar operated at room temperature by using terahertz fibers for radiation delivery and with a terahertz-fiber directional coupler acting as a Michelson interferometer. By taking advantage of the high water reflection contrast in the low terahertz regime and by electrically sweeping at a high speed a
Huang, Yu-Wei +4 more
openaire +2 more sources
Optics Express, 2020 Light detection and ranging (lidar) has long been used in various applications. Solid-state beam steering mechanisms are needed for robust lidar systems. Here we propose and demonstrate a lidar scheme called “Swept Source Lidar” that allows us to perform frequency-modulated continuous-wave (FMCW) ranging and nonmechanical beam steering simultaneously ...
Masayuki Okano, Changho Chong
openaire +3 more sources
Agreement of Anterior Segment Parameters Obtained From Swept-Source Fourier-Domain and Time-Domain Anterior Segment Optical Coherence Tomography. [PDF]
, 2018 PurposeTo assess the interdevice agreement between swept-source Fourier-domain and time-domain anterior segment optical coherence tomography (AS-OCT).MethodsFifty-three eyes from 41 subjects underwent CASIA2 and Visante OCT imaging.
Badr, Mai +6 more
core +2 more sources
Imaging of the Lamina Cribrosa using Swept-Source Optical Coherence Tomography. [PDF]
, 2012 The lamina cribrosa (LC) is the presumed site of axonal injury in glaucoma. Its deformation has been suggested to contribute to optic neuropathy by impeding axoplasmic flow within the optic nerve fibers, leading to apoptosis of retinal ganglion cells. To
Mansouri, Kaweh +2 more
core +2 more sources
Wavelength swept amplified spontaneous emission source
Optics Express, 2009 We present a new, alternative approach to realize a wavelength swept light source with no fundamental limit to sweep speed. Amplified spontaneous emission (ASE) light alternately passes a cascade of optical gain elements and tunable optical bandpass filters.
Huber, Robert +3 more
openaire +2 more sources
On the interaction of FR-II radio sources with the intracluster medium
, 2002 The effect of the expansion of powerful FR-II radio sources into a cluster environment is discussed. The analysis considers both the thermal and temporal evolution of the ICM which has passed through the bow shock of the radio source and the effect of ...
Alexander, McNamara, P. Alexander
core +1 more source
Polarization-sensitive swept-source optical coherence tomography with continuous source polarization modulation [PDF]
, 2008 We present fiber-based polarization-sensitive swept-source optical coherence tomography (SS-OCT) based on continuous source polarization modulation. The light source is a frequency swept laser centered at 1.31 μm with a scanning rate of 20 kHz.
Makita Shuichi +3 more
core +1 more source
Long-to-short wavelength swept source
Optics Express, 2018 Most swept external cavity diode lasers tune in the short-to-long wavelength direction (red tuning). Lower relative intensity noise (RIN) and higher output power are typically possible in this direction. We show here that long-to-short tuning (blue tuning) is possible for a short, linear cavity laser that has both low noise and high power. This mode of
Bart, Johnson +5 more
openaire +2 more sources