Nature Photonics contents February 2016 Volume 10 Number 2 pp 67-135

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TABLE OF CONTENTS February 2016 Volume 10, Issue 2 Editorial Commentary Books and Arts Research Highlights News and Views Review Letters Articles Erratum Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement New! Nature Reviews Materials — First issue now published. The first issue of Nature Reviews Materials is now published and free to access online! This new monthly journal provides timely, authoritative Reviews and Comments that are of broad interest and of exceptional quality across the entire spectrum of materials science and engineering. Ensure you stay up to date with future content by registering to receive the monthly e-alert.     Editorial Top First step to observing gravitational waves   p67 doi:10.1038/nphoton.2016.9 Designed with a laser metrology system, LISA Pathfinder is on track to demonstrate the first in-flight test of low-frequency gravitational wave detection metrology in space. Commentary Top Standardizing the resolution claims for coherent microscopy   pp68 - 71 Roarke Horstmeyer, Rainer Heintzmann, Gabriel Popescu, Laura Waller and Changhuei Yang doi:10.1038/nphoton.2015.279 The definition and reporting of spatial resolution for coherent imaging methods varies widely in the imaging community. We advocate the use of a standard spoke-pattern imaging target and the mandatory inclusion of information about underlying a priori assumptions. Books and Arts Top New titles at a glance   p72 Tunable Micro-optics By Hans Zappe and Claudia Deppé doi:10.1038/nphoton.2015.273 Research Highlights Top Optofluidics: Tunable droplet laser | Light-matter interaction: Nano-optical isolator | Signal processing: Random success | Endoscopy: Two-photon imaging | Quantum information: Reconfigurable circuits News and Views Top Fundamental optical physics: Nonlinear optics rules magnetism   pp74 - 75 Behnood G. Ghamsari and Pierre Berini doi:10.1038/nphoton.2015.272 Dynamic control of magnetization by short laser pulses has recently attracted much interest. The Kerr nonlinearity has now been utilized to modulate the polarization of light at terahertz frequencies. See also: Letter by Subkhangulov et al. X-ray photonics: Bending X-rays with nanochannels   pp75 - 77 Daniele Pelliccia doi:10.1038/nphoton.2015.275 X-ray counterparts of visible light optical elements are notoriously difficult to realize because the refractive index of all materials is close to unity. It has now been demonstrated that curved waveguides fabricated on a silicon chip can channel and deflect X-ray beams by consecutive grazing reflections. Quantum optics: Spooky spectroscopy   pp77 - 79 Jean-Pierre Wolf and Yaron Silberberg doi:10.1038/nphoton.2015.267 The quantum concepts of entanglement and interaction-free measurements are applied to spectroscopy to successfully sense carbon dioxide in air. See also: Letter by Kalashnikov et al. Infrared optics: Nanoscale heat   p79 David Pile doi:10.1038/nphoton.2016.1 Lasers: Topological effect   p80 Rachel Won doi:10.1038/nphoton.2015.283 Photonics JOBS of the week Tenure-track Assistant Professor in Photonics Nanyang Technological University (NTU Singapore) More Science jobs from Photonics EVENT More science events from Review Top Lead sulphide nanocrystal photodetector technologies   pp81 - 92 Rinku Saran and Richard J. Curry doi:10.1038/nphoton.2015.280 Concepts and advances of lead sulphide nanocrystal-based photodetector technologies are reviewed. Letters Top Femtosecond and nanometre visualization of structural dynamics in superheated nanoparticles   pp93 - 97 Tais Gorkhover, Sebastian Schorb, Ryan Coffee, Marcus Adolph, Lutz Foucar et al. doi:10.1038/nphoton.2015.264 Single Xe clusters are superheated using an intense optical laser pulse and the structural evolution is imaged with a single X-ray pulse. Ultrafast surface softening on the nanometre scale is resolved within 100 fs at the vacuum/sample interface. Infrared spectroscopy with visible light   pp98 - 101 Dmitry A. Kalashnikov, Anna V. Paterova, Sergei P. Kulik and Leonid A. Krivitsky doi:10.1038/nphoton.2015.252 The refractive index and absorption coefficient of a medium in the infrared range are measured using visible spectral range components. The technique relies on nonlinear interference of infrared and visible photons, produced by down-conversion. See also: News and Views by Wolf & Silberberg Femtosecond two-photon Rabi oscillations in excited He driven by ultrashort intense laser fields   pp102 - 105 M. Fushitani, C.-N. Liu, A. Matsuda, T. Endo, Y. Toida et al. doi:10.1038/nphoton.2015.228 Two-photon Rabi oscillations are observed in He on a timescale of 10 fs by utilizing the strong-field phenomenon known as Freeman resonance. The importance of ponderomotive shifts of both the Rydberg states and the ionization limit is highlighted. Hanbury Brown and Twiss measurements in curved space   pp106 - 110 Vincent H. Schultheiss, Sascha Batz and Ulf Peschel doi:10.1038/nphoton.2015.244 Hanbury Brown and Twiss measurements on speckle patterns propagating along curved surfaces improve understanding of spatial coherence. Terahertz modulation of the Faraday rotation by laser pulses via the optical Kerr effect   pp111 - 114 R. R. Subkhangulov, R. V. Mikhaylovskiy, A. K. Zvezdin, V. V. Kruglyak, Th. Rasing et al. doi:10.1038/nphoton.2015.249 Terbium gallium garnet is used to demonstrate a new approach to magneto-optical modulation at frequencies up to 1.1 THz. See also: News and Views by Ghamsari & Berini Advertisement All content now free to access including archives! Nature Communications is an open access journal that publishes high-quality research from all areas of the natural sciences. Papers published by the journal represent important advances of significance to specialists within each subject area including physics. Visit the website to explore ALL the content available within your field.    Articles Top Laser cooling of organic–inorganic lead halide perovskites   pp115 - 121 Son-Tung Ha, Chao Shen, Jun Zhang and Qihua Xiong doi:10.1038/nphoton.2015.243 Perovskite crystals are shown to be highly efficient materials for optical refrigeration, supporting cooling of up to 58 K when exposed to laser light. Coordinate-targeted fluorescence nanoscopy with multiple off states   pp122 - 128 Johann G. Danzl, Sven C. Sidenstein, Carola Gregor, Nicolai T. Urban, Peter Ilgen et al. doi:10.1038/nphoton.2015.266 By exploiting a second off state of a reversibly switchable fluorophore, a general approach that can reduce photobleaching and enhance resolution of coordinate-targeted fluorescence nanoscopy has been demonstrated. High-gain infrared-to-visible upconversion light-emitting phototransistors   pp129 - 134 Hyeonggeun Yu, Doyoung Kim, Jinhyung Lee, Sujin Baek, Jaewoong Lee et al. doi:10.1038/nphoton.2015.270 An optoelectronic device that efficiently converts infrared light to visible light could prove useful for imaging applications. Erratum Top Erratum: Non-collinear generation of angularly isolated circularly polarized high harmonics   p135 Daniel D. Hickstein, Franklin J. Dollar, Patrik Grychtol, Jennifer L. Ellis, Ronny Knut et al. doi:10.1038/nphoton.2015.268 Top Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

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