Results 31 to 40 of about 19,914 (296)

Handheld forward-imaging needle endoscope for ophthalmic optical coherence tomography inspection [PDF]

, 2008
We report the narrowest to-date (21 gauge, 820-µm-diam) handheld forward-imaging optical coherence tomography (OCT) needle endoscope and demonstrate its feasibility for ophthalmic OCT inspection.
Han, Shuo, Humayun, Mark, Sarunic, Marinko V., Wu, Jigang, Yang, Changhuei   +4 more
core   +1 more source

Wavelength-swept Tm-doped fiber laser operating in the two-micron wavelength band [PDF]

, 2014
A wavelength-swept thulium-doped silica fiber laser using an intracavity rotating slotted-disk wavelength scanning filter in combination with an intracavity solid etalon for passive control of temporal and spectral profiles is reported. The laser yielded
C. S. Chenug, Chinn, Geng, H. Liang, Huber, J. M. O. Daniel, Jeon, Kodach, Liang, M. Tokurakawa, Moon, Nielsen, Oh, Scheps, Shen, Srinivasan, Tsai, W. A. Clarkson, Yun, Yun   +19 more
core   +1 more source

Complex Master Slave Interferometry [PDF]

, 2016
A general theoretical model is developed to improve the novel Spectral Domain Interferometry method denoted as Master/Slave (MS) Interferometry. In this model, two functions, g and h are introduced to describe the modulation chirp of the channeled ...
Bradu, Adrian, Feuchter, Thomas, Leick, Lasse, Maria, Michael, Podoleanu, Adrian, Rivet, Sylvain   +5 more
core   +1 more source

All fiber polarization insensitive detection for spectrometer based optical coherence tomography using optical switch

, 2019
Polarization dependent image artifacts are common in optical coherence tomography imaging. Polarization insensitive detection scheme for swept source based optical coherence tomography systems is well established but is yet to be demonstrated for all ...
Otuya, D., Sharma, G., Singh, K., Tearney, G.   +3 more
core   +1 more source

Frequency multiplexed long range swept source optical coherence tomography [PDF]

Biomedical Optics Express, 2013
We present a novel swept source optical coherence tomography configuration, equipped with acousto-optic deflectors that can be used to simultaneously acquire multiple B-scans originating from different depths. The sensitivity range of the configuration is evaluated while acquiring five simultaneous B-scans.
Zurauskas, Mantas, Bradu, Adrian, Podoleanu, Adrian Gh.   +2 more
openaire   +3 more sources

Clinical utility of anterior segment swept-source optical coherence tomography in glaucoma

Oman Journal of Ophthalmology, 2016
Optical coherence tomography (OCT), a noninvasive imaging modality that uses low-coherence light to obtain a high-resolution cross-section of biological structures, has evolved dramatically over the years.
Dewang Angmo, Monisha E Nongpiur, Reetika Sharma, Talvir Sidhu, Ramanjit Sihota, Tanuj Dada   +5 more
doaj   +1 more source

Phase-stability optimization of swept-source optical coherence tomography [PDF]

Biomedical Optics Express, 2018
Phase-resolved imaging of swept-source optical coherence tomography (SS-OCT) is subject to phase measurement instabilities involved with the sweep variation of a frequency-swept source. In general, optically generated timing references are utilized to track the variations imposed on OCT signals.
Sucbei Moon, Zhongping Chen
openaire   +3 more sources

Quantum optical coherence tomography with dispersion cancellation

, 2001
We propose a new technique, called quantum optical coherence tomography (QOCT), for carrying out tomographic measurements with dispersion-cancelled resolution.
A. Zeilinger, A.M. Steinberg, A.M. Steinberg, Alexander V. Sergienko, Ayman F. Abouraddy, Bahaa E. A. Saleh, C.K. Hong, C.K. Hong, D. Huang, D.A. Kleinman, D.C. Burnham, D.N. Klyshko, D.N. Klyshko, E. Wigner, J.D. Franson, J.G. Rarity, J.M. Schmidt, L. Cohen, M.C. Teich, Magued B. Nasr, Malvin C. Teich, R. Ghosh, R. Ghosh, R.A. Campos, R.A. Campos, S.E. Harris, T.G. Giallorenzi, T.S. Larchuk   +27 more
core   +1 more source

Logarithmic intensity and speckle-based motion contrast methods for human retinal vasculature visualization using swept source optical coherence tomography [PDF]

, 2012
We formulate a theory to show that the statistics of OCT signal amplitude and intensity are highly dependent on the sample reflectivity strength, motion, and noise power.
Cense, Fingler, Flammer, Friedman, Hope-Ross, Karamata, Lee, Liu, Liu, Makita, Makita, Mariampillai, Mariampillai, Patel, Pierce, Pircher, Schmitt, Schmoll, Szkulmowska, Vakoc, Vakoc, Wang, Wang, Wojtkowski, Yannuzzi, Yasuno   +25 more
core   +2 more sources

Application and progress of swept source optical coherence tomography in choroid-related diseases

Yanke Xuebao
Central serous chorioretinopathy (CSC) is one of the choroidal spectrum diseases, characterized by choriod thickening and increased vascular permeability. Therefore it is very important to observe choroid, as this allows us to monitor it and formulate an
LI Jiyun, ZENG Renpan
doaj   +1 more source