Fourier domain mode locked laser and its applications

D Huang, Y Shi, F Li, PKA Wai - Sensors, 2022 - mdpi.com
The sweep rate of conventional short-cavity lasers with an intracavity-swept filter is limited by
the buildup time of laser signals from spontaneous emissions. The Fourier domain mode …

Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation

J Tang, B Zhu, W Zhang, M Li, S Pan, J Yao - Nature communications, 2020 - nature.com
We show the generation of a tunable linearly chirped microwave waveform (LCMW) with an
ultra-large time-bandwidth product (TBWP) based on a hybrid Fourier-domain mode-locked …

Spectral interferometry with frequency combs

K Twayana, I Rebolledo-Salgado, E Deriushkina… - Micromachines, 2022 - mdpi.com
In this review paper, we provide an overview of the state of the art in linear interferometric
techniques using laser frequency comb sources. Diverse techniques including Fourier …

Large area robotically assisted optical coherence tomography (LARA-OCT)

S Lotz, M Göb, S Böttger, L Ha-Wissel… - Biomedical Optics …, 2024 - opg.optica.org
We demonstrate large-area robotically assisted optical coherence tomography (LARA-OCT),
utilizing a seven-degree-of-freedom robotic arm in conjunction with a 3.3 MHz swept-source …

A generative adversarial network with multi-scale convolution and dilated convolution res-network for OCT retinal image despeckling

X Yu, M Li, C Ge, PP Shum, J Chen, L Liu - Biomedical Signal Processing …, 2023 - Elsevier
Optical coherence tomography (OCT) has been widely adopted for imaging in various areas,
yet it is largely affected by speckle noise generated from the coherent multiple-scattered …

Reconfigurable time-stretched swept laser source with up to 100 MHz sweep rate, 100 nm bandwidth, and 100 mm OCT imaging range

D Huang, F Li, C Shang, Z Cheng, PKA Wai - Photonics Research, 2020 - opg.optica.org
The sweep rate, sweep range, and coherence length of swept sources, respectively,
determine the acquisition rate, axial resolution, and imaging range of optical coherence …

Continuous spectral zooming for in vivo live 4D-OCT with MHz A-scan rates and long coherence

M Göb, T Pfeiffer, W Draxinger, S Lotz… - Biomedical Optics …, 2022 - opg.optica.org
We present continuous three-dimensional spectral zooming in live 4D-OCT using a home-
built FDML based OCT system with 3.28 MHz A-scan rate. Improved coherence …

Towards phase-stabilized Fourier domain mode-locked frequency combs

C Grill, T Blömker, M Schmidt, D Kastner… - Communications …, 2022 - nature.com
Fourier domain mode-locked (FDML) lasers are some of the fastest wavelength-swept light
sources, and used in many applications like optical coherence tomography (OCT), OCT …

Microscope integrated MHz optical coherence tomography system for neurosurgery: development and clinical in-vivo imaging

W Draxinger, N Detrez, P Strenge, V Danicke… - Biomedical Optics …, 2024 - opg.optica.org
Neurosurgical interventions on the brain are impeded by the requirement to keep damages
to healthy tissue at a minimum. A new contrast channel enhancing the visual separation of …

828 kHz retinal imaging with an 840 nm Fourier domain mode locked laser

M Klufts, AM Jiménez, S Lotz, MA Bashir… - Biomedical Optics …, 2023 - opg.optica.org
This paper presents a Fourier domain mode locked (FDML) laser centered around 840 nm. It
features a bidirectional sweep repetition rate of 828 kHz and a spectral bandwidth of 40 nm …