1. Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
2. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
3. Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
4. Asahi Kasei, Energy and Environment R&D Center, 2-1 Samejima, 416-8501 Fuji, Japan
5. Photonics Advanced Research Center, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
6. Centre for Disruptive Photonic Technologies, SPMS, TPI, Nanyang Technological University, Singapore 637371, Singapore