Work

Linear-in-wavenumber actively-mode-locked wavelength-swept laser

Year: 2020

Type: article

Abstract: We report on an akinetic actively-mode-locked wavelength-swept laser (ASL) with a sweep that is highly linear in wavenumber. By tailoring the drive waveform of the intracavity modulator, the wavenumber sweep was further linearized to enable high fidelity frequency-domain interferometric ranging without resampling of the acquired data. Used for catheter-based optical coherence tomography, the ASL showed comparable imaging performance to a state-of-the-art polygon-based wavelength-swept source at a matching sweep rate of 103.6 kHz, a duty cycle of 95%, and a bandwidth of 100 nm, centered at 1330 nm.

Source: Optics Letters

DOI: 10.1364/ol.397715

Authors: Hwidon Lee, Gyeong Hun Kim, Martin Villiger, Hansol Jang, Brett E. Bouma, Chang-Seok Kim

Institutions: Harvard University, Massachusetts General Hospital, Pusan National University, Massachusetts Institute of Technology

Language: English

Topic: Advanced Fiber Laser Technologies

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Institutes of Health, National High-tech Research and Development Program, National Institute of Biomedical Imaging and Bioengineering