Publications by Year: 2015

Niu, Nan, Alexander Woolf, Danqing Wang, Tongtong Zhu, Qimin Quan, Rachel A. Oliver, and Evelyn L. Hu. 2015. “Ultra-low threshold gallium nitride photonic crystal nanobeam laser.” Appl. Phys. Lett. 106 (23). Publisher's Version
Zgrabik, Christine M., and Evelyn L. Hu. 2015. “Optimization of sputtered titanium nitride as a tunable metal for plasmonic applications.” Opt. Mater. Express 5 (12). OSA: 2786–2797. Publisher's VersionAbstract
Alternative materials for plasmonic devices have garnered much recent interest. A promising candidate material is titanium nitride. Although there is a substantial body of work on the formation of this material, its use for plasmonic applications requires a more systematic and detailed optical analysis than has previously been carried out. This paper describes an initial optimization of sputtered TiN thin films for plasmonic performance from visible into near-IR wavelengths. The metallic behavior of TiN films exhibits a sensitive dependence on the substrate and deposition details. We explored reactive and non-reactive sputter deposition of TiN onto various substrates at both room temperature and 600&\#x00B0;C. Metallic character was compared for films grown under different conditions via spectroscopic ellipsometry and correlated with compositional and structural measurements via x-ray photoelectron spectroscopy (XPS), x-ray diffraction (XRD), and scanning transmission electron microscopy (STEM).
Bracher, David O., and Evelyn L. Hu. 2015. “Fabrication of High-Q Nanobeam Photonic Crystals in Epitaxially Grown 4H-SiC.” Nano Letters 15 (9): 6202-6207. Publisher's Version
Cui, Shanying, Andrew S Greenspon, Kenichi Ohno, Bryan A Myers, Ania Bleszynski C Jayich, David D Awschalom, and Evelyn L Hu. 2015. “Reduced Plasma-Induced Damage to Near-Surface Nitrogen-Vacancy Centers in Diamond.” Nano Letters 15: 2887-2891. Publisher's Version
Cui, Shanying, Xingyu Zhang, Tsung-Li Liu, Jonathan Lee, David Bracher, Kenichi Ohno, David Awschalom, and Evelyn L Hu. 2015. “Hybrid Plasmonic Photonic Crystal Cavity for Enhancing Emission from near-Surface Nitrogen Vacancy Centers in Diamond.” ACS Photonics 2: 465-469. Publisher's Version