Open AccessSwept-wavelength lasers based on GaSb gain-chip technology for non-invasive biomedical sensing applications in the 1.7–2.5 μm wavelength range
Author(s) -
Augustinas Vizbaras,
Ieva Šimonytė,
Aru̅nas Miasojedovas,
Augustinas Trinkūnas,
Tadas Bučiūnas,
Mindaugas Greibus,
Greta Naujokaitė,
Nicolas Torcheboeuf,
Serge Droz,
D. L. Boïko,
Žilvinas Dambrauskas,
Antanas Gulbinas,
Kristijonas Vizbaras
Publication year - 2018
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.9.004834
Subject(s) - wavelength , optics , optoelectronics , laser , materials science , semiconductor laser theory , chip , computer science , telecommunications , physics
The infrared spectral region beyond 1.7 μm is of utmost interest for biomedical applications due to strong overtone and combination absorption bands in a variety of important biomolecules such as lactates, urea, glucose, albumin, etc. In this article, we report on recent progress in widely tunable swept-wavelength lasers based on type-I GaSb gain-chip technology, setting a new state-of-the-art in the 1.7 - 2.5 μm range laser sources. We provide an application example for the spectroscopic sensing of several biomolecules in a cuvette as well as an experimental demonstration of a non-invasive in-vivo sensing of human serum albumin through the skin.