Figure 4
From: Highly Efficient Coupling of Nanolight Emitters to a Ultra-Wide Tunable Nanofibre Cavity
Fluorescence spectra of a few QDs coupled to a nanofibre cavity.
(a), (b), (c), Measured signal for three different tunings (622 nm, 627 nm and 629 nm) of the fibre nanocavity. Spectra acquired using a halogen lamp are shown in green (i in panel (d)), spectra acquired through the fibre while exciting using the microscope objective are shown in blue (ii in panel (d)) and spectra acquired using the confocal microscope are shown in back (iii in panel (d)). The dashed vertical line indicates the cut-on wavelength of the longpass filters used and the black curves are offset by −0.2 arb u for clarity. (d), Sketch of the different setups used. (e), Antibunching measurement in confocal configuration under pulsed excitation. From the clear dip going below 0.5 it can be concluded that the main contribution to the signal stems from a single emitter.
