Fig. 1. Periodic array of horizontal InP nanowires embedded in a glass matrix of refractive index nglass=1.5. The period is p and the nanowire diameter is D. Light is incident at a normal angle to the array and either TE or TM polarized. Notice that we show here four of the infinitely many nanowires of the array. Furthermore, we assume in the modeling that each nanowire is infinitely long.

Fig. 2. Absorptance at λ=920  nm in a horizontal array of InP nanowires for a fixed period to diameter ratio of p/D=3. Here, results from full electromagnetic modeling (solid lines) as well as from an electrostatic approximation (dashed lines) are shown for both TE and TM polarized incident light.

Fig. 3. Absorptance at λ=920  nm in a horizontal nanowire array of period p=900  nm for both TE and TM polarized incident light. The arrows indicate peaks that arise from resonances in the individual nanowires. The inset shows the field distribution of the TM01 eigenmode in an individual nanowire, as calculated also in [1]. The eigenmode shows up for D=74  nm, and the dashed circle denotes the nanowire.

Fig. 4. Absorptance for both TE and TM polarized incident light at λ=920  nm in a horizontal nanowire array with nanowires of diameter D=80  nm. The inset shows the reflectance R and transmittance T for both polarizations.

Fig. 5. Absorptance as a function of nanowire diameter D and array period p for (a) TM and (b) TE polarized light at λ=920  nm. The dashed lines denote the diameter where the TM01, TM11, and TE01 resonances [1] show up in a single nanowire for λ=920  nm.

Fig. 6. |E|2 for TM polarized light in the x–z plane at λ=920  nm for a period of (a) p=400  nm and (b) p=574  nm. Here, three nanowires of 80 nm in diameter are shown (dashed circles). Light is incident from the top side with |Einc|2=1 and a region of 600 nm in length both above and below the nanowire array is shown. Notice the difference in the color scale by a factor of 10 between (a) and (b). (c) Schematic of the TM01 resonance in the individual nanowires in (a). (d) Schematic of the coupled resonance between the TM01 resonance and the lattice resonance in (b).