Special Issues on Terahertz Photonics
Right after the celebration of 10th anniversary of Light: Science & Applications (LSA) in 2022, we published eleven papers in three special issues separated by six months covering the fundamentals and applications in THz optics and photonics. These papers presenting the basic research overview or cross-cutting interdisciplinary research are contributed from the most active groups in eight countries. They are:
- Terahertz structured light: nonparaxial Airy imaging using silicon diffractive optics by Rusnė Ivaškevičiūtė-Povilauskienė et al. (Lithuania & Poland);
- Enhancement of THz generation in LiNbO3 waveguides via multi-bounce velocity matching by Keith Nelson et al. (USA & Germany);
- Milliwatt terahertz harmonic generation from topological insulator metamaterials by K. J. Tielrooij et al. (Spain, The Netherlands, Germany, UK & Poland);
- Multi-millijoule terahertz emission from laser-wakefield-accelerated electrons by Ki-Yong Kim et al. (Korea, USA & Iran,);
- Planarized THz quantum cascade lasers for broadband coherent photonics by Urban Senica et al. (Switzerland & Italy);
- Rapid, noncontact, sensitive, and semiquantitative characterization of buffered hydrogen-fluoride-treated silicon wafer surfaces by terahertz emission spectroscopy by Masayoshi Tonouchi et al. (Japan);
- Near-field terahertz nonlinear optics with blue light by Dan Mittleman et al. (USA);
- A novel scheme for ultrashort terahertz pulse generation over a gapless wide spectral range: Raman-resonance-enhanced four-wave mixing by Yuen Ron Shen et al. (USA & China);
- Ultrafast terahertz emission from emerging symmetry-broken materials by Hou-Tong Chen (USA);
- High-throughput terahertz imaging: progress and challenges by Mona Jarrahi et al. (USA);
- Tilted pulse front pumping techniques for efficient terahertz pulse generation by János Hebling et al. (Hungary).
This collection serves as most updated references and detailed guidance for the active researchers in the THz photonics community. We hope these papers will stimulate and promote broader research and activities in other related fields. Our Editorial Office wishes we are all inspired for the past ten years and a healthy start to the next ten years!
