Broadband light source based on quantum-well superluminescent diodes for high-resolution optical coherence tomography

Emission of single quantum-well superluminescent diodes of two types in spectral ranges between 810 and 870 nm and between 860 and 970 nm is combined with the help of an original broadband fibre Y-coupler. Such a light source produces more than 5 mW of the cw output optical power and has a record sm...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2004-10, Vol.34 (10), p.915-918
Main Authors: Adler, D S, Ko, T H, Konorev, A K, Mamedov, D S, Prokhorov, Vyacheslav V, Fujimoto, J G, Yakubovich, S D
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COHERENCE LENGTH
DIAGNOSTIC TECHNIQUES
DIMENSIONS
DIODE TUBES
ELECTRON TUBES
EMISSION
FIBERS
FREQUENCY RANGE
KHZ RANGE
LENGTH
LIGHT SOURCES
LUMINESCENCE
MHZ RANGE
NANOSTRUCTURES
PHOTON EMISSION
QUANTUM WELLS
RADIATION SOURCES
RESOLUTION
SPATIAL RESOLUTION
TOMOGRAPHY
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Summary:Emission of single quantum-well superluminescent diodes of two types in spectral ranges between 810 and 870 nm and between 860 and 970 nm is combined with the help of an original broadband fibre Y-coupler. Such a light source produces more than 5 mW of the cw output optical power and has a record small coherence length of about 5 {mu}m. Its relative intensity noise does not exceed -135 dB Hz{sup -1} in the 100-kHz-10-MHz frequency range. The use of this source in an optical coherence tomography provides the recording of tomograms of biological objects in vivo with a spatial resolution of 2-3 {mu}m. (lasers)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2004v034n10ABEH002799