10 hasil untuk "Adrian Podoleanu"
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Artikel Jurnal
Electrical Versus Optical Generation of Leader Signals for Downconversion Leader-Follower Optical Coherence Tomography
The paper refers to advancements in the production of en-face optical coherence tomography (OCT) images from different depths in a sample in real time, using Downconversion Leader-Follower optical coherence tomography method. So far, for a sample placed in an interferometer (Follower), all previous…
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Artikel Jurnal
Full-Field Swept Source Master-Slave Optical Coherence Tomography
We apply the principle of master-slave (MS) interferometry to a full-field swept source optical coherence tomography (OCT) setup equipped with a fast 2-D camera. MS interferometry does not involve Fourier transformations and, therefore, eliminates the need for spectrum data resampling required by…
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Artikel Jurnal Teks lengkap
An Application of Simulated Annealing in Compensation of Nonlinearity of Scanners
Galvo scanners are popular devices for fast transversal scanning. A triangular signal is usually employed to drive galvo scanners at scanning rates close to the inverse of their response time where scanning deflection becomes a nonlinear function of applied voltage. To address this, the triangular…
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Artikel Jurnal
Shot-Noise Limited, 10 MHz Swept-Source Optical Coherence Tomography for Retinal Imaging
Akinetic swept-sources are essential for high-speed optical coherence tomography (OCT) imaging. Time-stretched supercontinuum (TSSC) lasers have proven to be efficient for multi-MHz swept-sources. However, lack of low-noise broadband lasers and of large dispersion devices in the water…
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Artikel Jurnal Teks lengkap
Akinetic Swept-Source Master–Slave-Enhanced Optical Coherence Tomography
This paper presents a different approach for processing the signal from interferometers driven by swept sources that exhibit non-linear tuning during stable time intervals. Such sources are, for example, those commercialised by Insight, which are electrically tunable and akinetic. These Insight…
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Artikel Jurnal
40 MHz Swept-Source Optical Coherence Tomography at 1060 nm Using a Time-Stretch and Supercontinuum Spectral Broadening Dynamics
We present an akinetically swept light source based on a spectrally broadened mode-locked laser in all normal dispersion optical fiber followed by a linear dispersive time stretch and a regenerative amplification stage. Developed for ultrafast swept-source optical coherence tomography (SS-OCT), the…
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Artikel Jurnal
Dispersion-Tuned Mode-Locked Laser for Swept Source OCT at 850 nm Using a cFBG and the Pulse Modulation Technique
In this paper, the feasibility of employing a fast intensity modulator and a chirped fibre Bragg grating to build a dispersion-tuned mode-locked swept laser (DTML-SS) for OCT at 850 nm is evaluated. Stable mode-locking is achieved by applying 50 ps pulses at 1 GHz to the modulator, obtaining 35 nm…
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Artikel Jurnal Teks lengkap
Optimization of X-ray Investigations in Dentistry Using Optical Coherence Tomography
The most common imaging technique for dental diagnoses and treatment monitoring is X-ray imaging, which evolved from the first intraoral radiographs to high-quality three-dimensional (3D) Cone Beam Computed Tomography (CBCT). Other imaging techniques have shown potential, such as Optical Coherence…
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Artikel Jurnal
Two octaves spanning photoacoustic microscopy
Abstract In this study, for the first time, a Photoacoustic Microscopy instrument driven by a single optical source operating over a wide spectral range (475–2400 nm), covering slightly more than two octaves is demonstrated. Xenopus laevis tadpoles were imaged in vivo using the whole spectral range…
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Artikel Jurnal
All-fibre supercontinuum laser for in vivo multispectral photoacoustic microscopy of lipids in the extended near-infrared region
Among the numerous endogenous biological molecules, information on lipids is highly coveted for understanding both aspects of developmental biology and research in fatal chronic diseases. Due to the pronounced absorption features of lipids in the extended near-infrared region (1650−1850 nm)…