Nature Photonics contents January 2013 Volume 7 Number 1 pp1-80

TABLE OF CONTENTS January 2013 Volume 7, Issue 1 Editorial Research Highlights News and Views Review Progress Article Letters Articles Interview Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement E-MRS Conference Proceedings are NOW LIVE on Scientific Reports Symposium N & O E-MRS 2012 Spring Meeting   Editorial Top Not taking light lightly   p1 doi:10.1038/nphoton.2012.338 2012 was an eventful year for optics and photonics, pointing to an exciting yet challenging year ahead. Research Highlights Top Optical memory: Non-volatile storage | Photodetectors: Plasmonic enhancement | Classical optics: Spin Hall effect of light | Photodetectors: Nanoscale quantum-dot junctions | Optical manipulation: Active tractor beams | Accelerating beams: Non-paraxial-limited | Optofluidic lasers: In random form | Optical biosensors: Artificial antibodies | Wavelength conversion: Single-photon chameleon | Photocatalysis: Plasmonic enhancement News and Views Top Random photonics: True Anderson localization   pp5 - 6 Claudio Conti doi:10.1038/nphoton.2012.331 In three-dimensional disordered media, light localization can occur when the disorder is above a certain threshold. Researchers now report experimental evidence of this transition from light diffusion to trapping. See also: Letter by Sperling et al. Frequency combs: Spatial coherent control   pp6 - 8 Andrew M. Weiner doi:10.1038/nphoton.2012.334 Combining concepts from Doppler-free spectroscopy, coherent quantum control and frequency comb spectroscopy leads to new opportunities for the precision excitation of atomic species with high resolution, both spectrally and spatially. See also: Letter by Barmes et al. Optical metrology: A gentle touch   pp8 - 9 Geoff J. Pryde doi:10.1038/nphoton.2012.333 Light is an excellent tool for making precise measurements of objects, but can sometimes alter or damage a sensitive sample. Researchers have now shown that entanglement and quantum-correlated light can be used to help alleviate this problem. See also: Letter by Wolfgramm et al. View from... Frontiers in Optics 2012: Fast-paced photonics   pp9 - 12 Rachel Won doi:10.1038/nphoton.2012.335 Attosecond photonics has contributed to a wide range of important scientific and technological breakthroughs. The challenges now are to realize high-energy attosecond sources and to simplify attosecond technologies for widespread use. Optofluidics: On-chip bioassay   p12 Noriaki Horiuchi doi:10.1038/nphoton.2012.356 Photonics JOBS of the week Post-Doctoral Researcher Nonlinear Photonics Supelec PhD Scholarship (Graduate Research Assistant) in Electrical Engineering, Optics, Photonics Singapore University of Technology and Design PhD in Photonics - femtosecond laser applications: Tulsa, OK, United States Oklahoma State University More Science jobs from Photonics EVENT Annual International Conference on Optoelectronics, Photonics & Applied Physics (OPAP 2013) 04.-05.02.13 Singapore More science events from Review Top Emergence of colloidal quantum-dot light-emitting technologies   pp13 - 23 Yasuhiro Shirasaki, Geoffrey J. Supran, Moungi G. Bawendi and Vladimir Bulovic doi:10.1038/nphoton.2012.328 This Review article summarizes the key advantages of using quantum dots (QDs) as luminophores in light-emitting devices (LEDs) and outlines the operating mechanisms of four types of QD-LED. The key scientific and technological challenges facing QD-LED commercialization are identified, together with on-going strategies to overcome these challenges. Progress Article Top Optically induced 'negative forces'   pp24 - 27 Aristide Dogariu, Sergey Sukhov1 and José Sáenz doi:10.1038/nphoton.2012.315 Attracting objects with optical beams may seem like science fiction, but various schemes already do this, albeit with some caveats and limitations. The most recent progress in this emerging field is reviewed, with particular emphasis on manipulation of small objects by optically induced 'negative forces'. Letters Top Entanglement-enhanced probing of a delicate material system   pp28 - 32 Florian Wolfgramm, Chiara Vitelli, Federica A. Beduini, Nicolas Godbout and Morgan W. Mitchell doi:10.1038/nphoton.2012.300 Researchers report the entanglement-enhanced measurement of a delicate material system, in which they non-destructively probe an 85Rb atomic spin ensemble by near-resonant Faraday rotation. They use narrowband, atom-resonant /`NOON/' states to beat the standard quantum limit of sensitivity by more than five standard deviations, both on a per-photon and a per-damage basis. See also: News and Views by Pryde Frequency-multiplexed in vivo multiphoton phosphorescence lifetime microscopy   pp33 - 37 Scott S. Howard, Adam Straub, Nicholas G. Horton, Demirhan Kobat and Chris Xu doi:10.1038/nphoton.2012.307 A parallel implementation of multifocal multiphoton modulation microscopy allows simultaneous phosphorescent lifetime and intensity imaging in vivo at speeds 100 times faster than conventional configurations. Three-dimensional imaging of a phosphorescent quenching dye is also presented. Spatial and spectral coherent control with frequency combs   pp38 - 42 Itan Barmes, Stefan Witte and Kjeld S. E. Eikema doi:10.1038/nphoton.2012.299 Coherent control is a powerful tool for controlling light-matter interactions in time and frequency. Now, scientists show that counter-propagating broadband pulses can be used to generate fully controlled spatial excitation patterns. This spatial control approach also reduces decoherence, providing a high-frequency resolution similar to that of an optical frequency comb. See also: News and Views by Weiner Focusing of X-ray free-electron laser pulses with reflective optics   pp43 - 47 Hirokatsu Yumoto, Hidekazu Mimura, Takahisa Koyama, Satoshi Matsuyama, Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Takahiro Sato, Takashi Tanaka, Takashi Kimura, Hikaru Yokoyama, Jangwoo Kim, Yasuhisa Sano, Yousuke Hachisu, Makina Yabashi, Haruhiko Ohashi, Hitoshi Ohmori, Tetsuya Ishikawa and Kazuto Yamauchi doi:10.1038/nphoton.2012.306 Researchers focus 10 keV X-ray free-electron laser radiation to an area of 0.95 µm x 1.20 µm with near-100%-efficiency using reflective optics. This approach increases the fluence by a factor of 40,000 and provides a power density of 6 x 1017 W cm-2. Direct determination of the transition to localization of light in three dimensions   pp48 - 52 T. Sperling, W. Bührer, C. M. Aegerter and G. Maret doi:10.1038/nphoton.2012.313 Experimental demonstration of Anderson localization in three dimensions is a challenging task. Here researchers present a direct and absorption-independent measure of the localization length and evidence for a localization transition in three dimensions. See also: News and Views by Conti Articles Top Photoconductivity of biased graphene   pp53 - 59 Marcus Freitag, Tony Low, Fengnian Xia and Phaedon Avouris doi:10.1038/nphoton.2012.314 Scientists report that the photovoltaic effect and a photo-induced bolometric effect, rather than thermoelectric effects, dominate the photoresponse during a classic photoconductivity experiment in biased graphene. The findings shed light on the hot-electron-driven photoresponse in graphene and its energy loss pathway via phonons. Deterministic polarization chaos from a laser diode   pp60 - 65 Martin Virte, Krassimir Panajotov, Hugo Thienpont and Marc Sciamanna doi:10.1038/nphoton.2012.286 Chaotic behaviour is observed in the polarization of the output from a vertical-cavity surface emitting laser without the need for any external stimulus or feedback. The origin is nonlinear coupling between two elliptically polarized modes within the device. Suppression of interactions in multimode random lasers in the Anderson localized regime   pp66 - 71 Peter Stano and Philippe Jacquod doi:10.1038/nphoton.2012.298 Random lasing in the presence of nonlinearities and disordered gain media is still poorly understood. Researchers now present a semiclassical theory for multimode random lasing in the strongly scattering regime. They show that Anderson localization — a wave-interference effect — is not affected by the presence of nonlinearities, but instead suppresses interactions between simultaneously lasing modes. Bell's measure in classical optical coherence   pp72 - 78 Kumel H. Kagalwala, Giovanni Di Giuseppe, Ayman F. Abouraddy and Bahaa E. A. Saleh doi:10.1038/nphoton.2012.312 Researchers demonstrate that Bell's measure — a commonly used test of quantum nonlocality — can be used in classical optical schemes to separate incoherence associated with statistical fluctuations from incoherence based on correlation. This technique may be useful for quantum information applications such as classical optical coherence theory and optical signal processing. See also: Interview with Ayman Abouraddy & KumelKagalwala Interview Top Quantum tools for classical coherence   p80 Interview with Ayman Abouraddy & Kumel Kagalwala doi:10.1038/nphoton.2012.330 Optical coherence theory has a long and proud tradition. Nature Photonics spoke to Ayman Abouraddy and Kumel Kagalwala to learn about their recent work, which may reshape this established field. 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