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840-nm combined-SLED source integrated in 14-pin butterfly module with 140-nm bandwidth
Author(s): S. Gloor; J. Dahdah; N. Primerov; T. von Niederhäusern; M. Duelk; C. Velez
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Paper Abstract

We demonstrate an 840-nm broadband and compact light source with 140 nm FWHM optical bandwidth and 8 mW of output power, realized with three superluminescent diodes (SLEDs) that are, to our knowledge for the first time, integrated on a free-space, micro-optical bench in a standard 14-pin butterfly package. The three SLED chips at 790 nm, 840 nm and 880 nm are mounted on a ceramic baseplate that is temperature-stabilized by a thermo-electric cooler. The light output of the SLEDs is collimated by micro-optical collimation lenses, spectrally combined through free-space dielectric edge filters and focused into a HI-780 single-mode fiber. The combined broadband spectrum corresponds to a coherence length of 2.9 μm in air, suitable for ultra-high-resolution OCT systems.

Paper Details

Date Published: 19 July 2019
PDF: 3 pages
Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110780W (19 July 2019); doi: 10.1117/12.2527047
Show Author Affiliations
S. Gloor, EXALOS AG (Switzerland)
J. Dahdah, EXALOS AG (Switzerland)
N. Primerov, EXALOS AG (Switzerland)
T. von Niederhäusern, EXALOS AG (Switzerland)
M. Duelk, EXALOS AG (Switzerland)
C. Velez, EXALOS AG (Switzerland)


Published in SPIE Proceedings Vol. 11078:
Optical Coherence Imaging Techniques and Imaging in Scattering Media III
Maciej Wojtkowski; Stephen A. Boppart; Wang-Yuhl Oh, Editor(s)

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