840-nm combined-SLED source integrated in 14-pin butterfly module with 140-nm bandwidth

S. Gloor; J. Dahdah; N. Primerov; T. von Niederhäusern; M. Duelk; C. Velez

doi:10.1117/12.2527047

19 July 2019 840-nm combined-SLED source integrated in 14-pin butterfly module with 140-nm bandwidth

S. Gloor, J. Dahdah, N. Primerov, T. von Niederhäusern, M. Duelk, C. Velez

Proceedings Volume 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III; 110780W (2019) https://doi.org/10.1117/12.2527047
Event: European Conferences on Biomedical Optics, 2019, Munich, Germany

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.

Citation Download Citation

S. Gloor, J. Dahdah, N. Primerov, T. von Niederhäusern, M. Duelk, and C. Velez "840-nm combined-SLED source integrated in 14-pin butterfly module with 140-nm bandwidth", Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110780W (19 July 2019); https://doi.org/10.1117/12.2527047

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