Figure 2

(a) Non-resonant excitation PL spectrum of an InAs QD in an InP membrane with a wavelength of 1512.48 nm. Inset: An example of a non-resonant excitation PL spectra for an InP QD emitting within the telecom c-band at \(\sim\)1549 nm. (b) Time-resolved non-resonant lifetime measurement of the QD shown in (a), fitting gives a radiative lifetime of 1.78 ± 0.01 ns.