PMID- 36638424 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20230116 LR - 20230116 IS - 1539-4794 (Electronic) IS - 0146-9592 (Linking) VI - 48 IP - 2 DP - 2023 Jan 15 TI - Insight into refractive index modulation as route to enhanced light coupling in semiconductor nanowires. PG - 227-230 LID - 10.1364/OL.478419 [doi] AB - Recent developments in chemical processes to prepare single-crystalline nanowire (NW) superlattices (SLs) have discovered a range of unique nanophotonic properties. In particular, diameter-modulated silicon NW geometric SLs (GSLs) have shown their ability to produce complex interference effects through which enhanced light manipulation is achieved. Here, we re-imagine the origin of the complex interference effects occurring in shallow-modulated GSLs and present a refractive index modulation as a key deciding factor. We introduce the design of a NW refractive index SL (ISL), a hypothetical uniform-diameter NW in which the refractive index is periodically modulated, and explain the coupling effect between Mie resonance and bound guided state. We apply the ISL concept to other NW SL systems and suggest potential routes to bring substantial enhancements in lasing activities. FAU - Grain, Nathan AU - Grain N FAU - Kim, Seokhyoung AU - Kim S LA - eng PT - Journal Article PL - United States TA - Opt Lett JT - Optics letters JID - 7708433 SB - IM EDAT- 2023/01/14 06:00 MHDA- 2023/01/14 06:01 CRDT- 2023/01/13 17:02 PHST- 2023/01/13 17:02 [entrez] PHST- 2023/01/14 06:00 [pubmed] PHST- 2023/01/14 06:01 [medline] AID - 524611 [pii] AID - 10.1364/OL.478419 [doi] PST - ppublish SO - Opt Lett. 2023 Jan 15;48(2):227-230. doi: 10.1364/OL.478419.