NDLI: Fourier domain mode-locked swept source at 1050 nm based on a tapered amplifier.

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Fourier domain mode-locked swept source at 1050 nm based on a tapered amplifier.

Content Provider	Semantic Scholar
Author	Marschall, Sebastian Klein, Thomas Wieser, Wolfgang Biedermann, Benjamin R. Hsu, Kevin C. Hansen, Kim Per Sumpf, Bernd Hasler, K. Erbert, Götz Jensen, Ole Bjarlin Pedersen, Christian Braiie Huber, Robert Andersen, Peter E.
Copyright Year	2010
Abstract	While swept source optical coherence tomography (OCT) in the 1050 nm range is promising for retinal imaging, there are certain challenges. Conventional semiconductor gain media have limited output power, and the performance of high-speed Fourier domain mode-locked (FDML) lasers suffers from chromatic dispersion in standard optical fiber. We developed a novel light source with a tapered amplifier as gain medium, and investigated the FDML performance comparing two fiber delay lines with different dispersion properties. We introduced an additional gain element into the resonator, and thereby achieved stable FDML operation, exploiting the full bandwidth of the tapered amplifier despite high dispersion. The light source operates at a repetition rate of 116 kHz with an effective average output power in excess of 30 mW. With a total sweep range of 70 nm, we achieved an axial resolution of 15 microm in air (approximately 11 microm in tissue) in OCT measurements. As our work shows, tapered amplifiers are suitable gain media for swept sources at 1050 nm with increased output power, while high gain counteracts dispersion effects in an FDML laser.
Starting Page	1011
Ending Page	1021
Page Count	11
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://orbit.dtu.dk/fedora/objects/orbit:26070/datastreams/file_5430662/content
Alternate Webpage(s)	http://orbit.dtu.dk/files/5430662/0E9E15E2-BDB9-137E-C80FC0263DDFAC47_203760.pdf
PubMed reference number	20720964v1
Alternate Webpage(s)	https://doi.org/10.1364/OE.18.015820
DOI	10.1364/oe.18.015820
Journal	Optics express
Volume Number	18
Issue Number	15
Language	English
Access Restriction	Open
Subject Keyword	Electronic Amplifiers Fiber Optic Cables Kilohertz Lasers Mental Suffering Resonator Device Component Retina Semiconductors Tapering - action Tissue fiber Tomography, Emission-Computed Tomography, Optical Coherence tomography
Content Type	Text
Resource Type	Article

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