Norman Lippok
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View article: Integrated electro-optic digital-to-analog link for efficient computing and arbitrary waveform generation
Integrated electro-optic digital-to-analog link for efficient computing and arbitrary waveform generation Open
The rapid growth in artificial intelligence and modern communication systems demands innovative solutions for increased computational power and advanced signaling capabilities. Integrated photonics, leveraging the analog nature of electrom…
View article: RF properties of circular-ranging OCT signals
RF properties of circular-ranging OCT signals Open
Circular-ranging optical coherence tomography (CR–OCT) systems that use a time–stepped frequency comb source generate interference fringe signals that are more complex than those of a conventional swept–source OCT system. Here, we define a…
View article: Spectral- and Polarization-Dependent Scattering of Gold Nanobipyramids for Exogenous Contrast in Optical Coherence Tomography
Spectral- and Polarization-Dependent Scattering of Gold Nanobipyramids for Exogenous Contrast in Optical Coherence Tomography Open
Polarization-sensitive optical coherence tomography (PS-OCT) reveals the subsurface microstructure of biological tissue and provides information regarding the polarization state of light backscattered from tissue. Complementing OCT's struc…
View article: Multi-beam OCT imaging based on an integrated, free-space interferometer
Multi-beam OCT imaging based on an integrated, free-space interferometer Open
While it is a common practice to increase the speed of swept-source optical coherence tomography (OCT) systems by using a high-speed source, this approach may not always be optimal. Parallelization in the form of multiple imaging beams is …
View article: Stable multi-megahertz circular-ranging optical coherence tomography at 1.3 µm
Stable multi-megahertz circular-ranging optical coherence tomography at 1.3 µm Open
In Fourier-domain optical coherence tomography (OCT), the finite bandwidth of the acquisition electronics constrains the depth range and speed of the system. Circular-ranging (CR) OCT methods use optical-domain compression to surpass this …
View article: Resolving absolute depth in circular-ranging optical coherence tomography by using a degenerate frequency comb
Resolving absolute depth in circular-ranging optical coherence tomography by using a degenerate frequency comb Open
In Fourier-domain optical coherence tomography, an interference signal is generated that spans an RF bandwidth proportional to the product of three parameters: the imaging range, the imaging speed, and the inverse of the axial resolution. …
View article: Highly-stable, multi-megahertz circular-ranging optical coherence tomography at 1.3 um
Highly-stable, multi-megahertz circular-ranging optical coherence tomography at 1.3 um Open
In Fourier-domain optical coherence tomography (OCT), the finite bandwidth of the acquisition electronics constrains the depth range and speed of the system. Circular-ranging (CR) OCT methods use optical-domain compression to surpass this …
View article: Highly-stable, multi-megahertz circular-ranging optical coherence tomography at 1.3 um based on a chirped fiber Bragg grating
Highly-stable, multi-megahertz circular-ranging optical coherence tomography at 1.3 um based on a chirped fiber Bragg grating Open
In Fourier-domain optical coherence tomography (OCT), the finite bandwidth of the acquisition electronics constrains the depth range and speed of the system. Circular-ranging (CR) OCT methods use optical-domain compression to surpass this …
View article: Intravascular Polarimetry in Patients With Coronary Artery Disease
Intravascular Polarimetry in Patients With Coronary Artery Disease Open
Intravascular polarimetry provides quantitative metrics that help characterize coronary arterial tissues and may offer refined insight into coronary arterial atherosclerotic lesions in patients.
View article: Extended Coherence Length and Depth Ranging Using a Fourier-Domain Mode-Locked Frequency Comb and Circular Interferometric Ranging
Extended Coherence Length and Depth Ranging Using a Fourier-Domain Mode-Locked Frequency Comb and Circular Interferometric Ranging Open
Fourier domain mode-locking (FDML) has been a popular laser design for high speed optical frequency domain imaging (OFDI) but achieving long coherence lengths, and therefore imaging range, has been challenging. The narrow instantaneous lin…
View article: Optic axis mapping with catheter-based polarization-sensitive optical coherence tomography
Optic axis mapping with catheter-based polarization-sensitive optical coherence tomography Open
Birefringence offers an intrinsic contrast mechanism related to the microstructure and arrangement of fibrillary tissue components. Here we present a reconstruction strategy to recover not only the scalar amount of birefringence but also i…
View article: Quantitative depolarization measurements for fiber‐based polarization‐sensitive optical frequency domain imaging of the retinal pigment epithelium
Quantitative depolarization measurements for fiber‐based polarization‐sensitive optical frequency domain imaging of the retinal pigment epithelium Open
A full quantitative evaluation of the depolarization of light may serve to assess concentrations of depolarizing particles in the retinal pigment epithelium and to investigate their role in retinal diseases in the human eye. Optical cohere…
View article: Repeatability Assessment of Intravascular Polarimetry in Patients
Repeatability Assessment of Intravascular Polarimetry in Patients Open
Intravascular polarimetry with polarization sensitive optical frequency domain imaging (PS-OFDI) measures polarization properties of the vessel wall and offers characterization of coronary atherosclerotic lesions beyond the cross-sectional…
View article: Extended bandwidth wavelength swept laser source for high resolution optical frequency domain imaging
Extended bandwidth wavelength swept laser source for high resolution optical frequency domain imaging Open
Improving the axial resolution by providing wider bandwidth wavelength swept lasers remains an important issue for optical frequency domain imaging (OFDI). Here, we demonstrate a wide tuning range, all-fiber wavelength swept laser at a cen…