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A legacy for lasers p265


Ronald Drever may be most famous for co-founding the LIGO project and his gravitational-wave research, but his contributions to laser stabilization have had broad impact on the photonics community.


Books and Arts

New titles at a glance p266

2D Materials Edited by Phaedon Avouris, Tony F. Heinz & Tony Low



News and Views

Optoelectronics: Fast silicon photodiodes pp268 - 269

Michael B. Johnston


There is typically a compromise between speed and efficiency when designing silicon photodiodes. Now, researchers have exploited microstructuring to achieve fast and thin devices that are also efficient.

See also: Article by Gao et al.

Metamaterials: A low-energy Cherenkov glow pp269 - 271

Mário Silveirinha


Hyperbolic metamaterials are shown to enable the emission of Cherenkov radiation from low-energy charged particles travelling at slow speeds. The achievement could lead to new forms of light sources and detectors.

See also: Letter by Liu et al.

View from... JSAP Spring Meeting: A marriage of materials and optics pp271 - 273

Noriaki Horiuchi


A laser-annealing technique for increasing the dopant concentration in semiconductors, the creation of a glass with second-order optical nonlinearity and the realization of optical topological insulators were highlights at the Japan Society of Applied Physics Spring Meeting.

Liquid crystals: Realizing 3D topological solitons p273

Rachel Won




Metamaterial-inspired silicon nanophotonics pp274 - 284

Isabelle Staude & Jörg Schilling


Applying metamaterial concepts to dielectric systems offers low losses compared with metallic structures. Here, silicon-based metamaterial and nanophotonic advances are reviewed.



Spatially segregated free-carrier and exciton populations in individual lead halide perovskite grains pp285 - 288

S. Nah, B. Spokoyny, C. Stoumpos, C. M. M. Soe, M. Kanatzidis & E. Harel


A study of single grains of lead halide perovskite reveals the presence of both excitons and free charge carriers.

Integrated Cherenkov radiation emitter eliminating the electron velocity threshold pp289 - 292

Fang Liu, Long Xiao, Yu Ye, Mengxuan Wang, Kaiyu Cui, Xue Feng, Wei Zhang & Yidong Huang


Researchers use hyperbolic metamaterials to make an integrated Cherenkov light source and relax the electron energy requirements. Radiation covering the visible range and near-infrared is achieved with electron energies of only 0.25–1.4 keV.

See also: News and Views by Silveirinha

Relativistic electron beams driven by kHz single-cycle light pulses pp293 - 296

D. Guénot, D. Gustas, A. Vernier, B. Beaurepaire, F. Böhle, M. Bocoum, M. Lozano, A. Jullien, R. Lopez-Martens, A. Lifschitz & J. Faure


A laser–plasma accelerator delivering 5-MeV electrons at kHz repetition rate is demonstrated. It is achieved in the laser-wakefield-acceleration regime by using a multi-mJ laser system delivering near-single-cycle laser pulses of 3.4-fs duration.

Hybrid indium phosphide-on-silicon nanolaser diode pp297 - 300

Guillaume Crosnier, Dorian Sanchez, Sophie Bouchoule, Paul Monnier, Gregoire Beaudoin, Isabelle Sagnes, Rama Raj & Fabrice Raineri


By exploiting one-dimensional photonic crystal nanocavities, an ultra-compact indium phosphide-on-silicon laser diode with low current threshold, high wall-plug efficiency and high integrability is demonstrated.



Photon-trapping microstructures enable high-speed high-efficiency silicon photodiodes pp301 - 308

Yang Gao, Hilal Cansizoglu, Kazim G. Polat, Soroush Ghandiparsi, Ahmet Kaya, Hasina H. Mamtaz, Ahmed S. Mayet, Yinan Wang, Xinzhi Zhang, Toshishige Yamada, Ekaterina Ponizovskaya Devine, Aly F. Elrefaie, Shih-Yuan Wang & M. Saif Islam


Light-trapping nanoscale holes are exploited to improve the speed and efficiency of silicon photodiodes with intrinsic layers less than 2 μm thick.

See also: News and Views by Johnston

Optical holonomic single quantum gates with a geometric spin under a zero field pp309 - 314

Yuhei Sekiguchi, Naeko Niikura, Ryota Kuroiwa, Hiroki Kano & Hideo Kosaka


Ground-state spin rotations in a nitrogen–vacancy centre in diamond are manipulated within nanoseconds of a near-resonant light field being applied. Pauli quantum gates are demonstrated using the geometric spin preparation and read-out techniques.

Monolithic integration of hybrid perovskite single crystals with heterogenous substrate for highly sensitive X-ray imaging pp315 - 321

Wei Wei, Yang Zhang, Qiang Xu, Haotong Wei, Yanjun Fang, Qi Wang, Yehao Deng, Tao Li, Alexei Gruverman, Lei Cao & Jinsong Huang


Hybrid perovskite crystals are integrated onto silicon wafers enabling fabrication of an X-ray linear detector array. High sensitivity may reduce patient dose in medical imaging applications.

Chip-based wide field-of-view nanoscopy pp322 - 328

Robin Diekmann, Øystein I. Helle, Cristina I. Øie, Peter McCourt, Thomas R. Huser, Mark Schüttpelz & Balpreet S. Ahluwalia


Nanoscopy on a chip makes it possible to perform super-resolution imaging of biological specimens with a wide field-of-view.


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