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. Author manuscript; available in PMC: 2021 Mar 30.
Published in final edited form as: Anal Chem. 2020 Aug 24;92(18):12363–12370. doi: 10.1021/acs.analchem.0c02087

Figure 1. Instrument modifications for photodissociation via a fiber-optic cable capable of transmitting mid-IR photons.

Figure 1.

A) Instrumental schematic summarizes the retrofitting of a Fusion Lumos mass spectrometer with a fiber optic cable capable of transmitting IR light. A detailed schematic illustrates instrumental modifications necessary for IR transmission into the dual cell linear ion trap to implement AI-ETD and IRMPD. Modifications include the CO2 laser, fiber coupler, IR light skimmer, fiber optic cable, focusing lenses, guiding mirrors, and an entrance window added to the vacuum manifold. B) The cross-section and manufacturer specifications of the hollow-core fiber used in this study are shown. C) A three-dimensional depiction of the hollow-core fiber and components transmitting light from an IR laser and through a custom machined ion trap mount. Note, the illustrations in panels A-C are not to scale.