Cavity-Enhanced Spectroscopy in Condensed Phases: Recent Literature and Remaining Challenges

Figure 6

Experimental options for introducing light into a fiber loop for CES. (a) Macrobend coupler in which a laser beam is directed at a bend in the fiber and a small fraction of light is coupled through the fiber cladding. ((b) and (c)) Notch couplers reported in Rushworth et al. Figure reprinted with permission from Rushworth et al. [34]. Copyright 2011 American Chemical Society.