Nature photonics v.5 n.3 2011

Fourier-transform spectroscopy offers high resolution, wavelength accuracy and broad tunability, but is so far limited to the mid-ultraviolet range, down to wavelengths of 140 nm. Now, based on a wavefront-division scanning interferometer, researchers present a Fourier-transform spectroscopy scheme that covers a broad wavelength range of 40–250 nm with 7% tunability and an extrinsic absolute wavelength accuracy of 10⁻⁷.

Abstract- High-resolution broad-bandwidth Fourier-transform absorption spectroscopy in the VUV range down to 40 nm | Full Text- High-resolution broad-bandwidth Fourier-transform absorption spectroscopy in the VUV range down to 40 nm | PDF (1,096 KB)- High-resolution broad-bandwidth Fourier-transform absorption spectroscopy in the VUV range down to 40 nm

Subject term: Spectroscopy

Time-reversed ultrasonically encoded optical focusing into scattering media -pp154 - 157

Xiao Xu, Honglin Liu & Lihong V. Wang

doi:10.1038/nphoton.2010.306

Focusing into a scattering medium is much more valuable than focusing through it. Scientists now demonstrate the dynamic focusing of light into a scattering medium by combining the ultrasonic modulation of diffused coherent light with optical phase conjugation.

Abstract- Time-reversed ultrasonically encoded optical focusing into scattering media | Full Text- Time-reversed ultrasonically encoded optical focusing into scattering media | PDF (3,745 KB)- Time-reversed ultrasonically encoded optical focusing into scattering media | Supplementary information

Subject terms: Imaging and sensing | Biophotonics

Making optical atomic clocks more stable with 10⁻¹⁶-level laser stabilization -pp158 - 161

Y. Y. Jiang, A. D. Ludlow, N. D. Lemke, R. W. Fox, J. A. Sherman, L.-S. Ma & C. W. Oates

doi:10.1038/nphoton.2010.313

Scientists demonstrate a cavity-stabilized laser system with a reduced thermal noise floor, exhibiting a fractional frequency instability of 2 × 10⁻¹⁶. They use this system as a stable optical source in an ytterbium optical lattice clock to resolve an ultranarrow 1 Hz linewidth for the 518 THz clock transition. Consistent measurements with a clock instability of 5 × 10⁻¹⁶/√τ are reported.

Abstract- Making optical atomic clocks more stable with 10-16-level laser stabilization | Full Text- Making optical atomic clocks more stable with 10−16-level laser stabilization | PDF (436 KB)- Making optical atomic clocks more stable with 10−16-level laser stabilization

Subject terms: Quantum optics | Lasers, LEDs and light sources | Nanophotonics

Few-femtosecond timing at fourth-generation X-ray light sources-pp162 - 165

F. Tavella, N. Stojanovic, G. Geloni & M. Gensch

doi:10.1038/nphoton.2010.311

Next-generation X-ray sources have allowed new opportunities for ultrafast imaging, but such schemes require femtosecond synchronization between the pump and probe laser pulses. Here, researchers present few-femtosecond timing between a free-electron laser and an external laser exploiting terahertz radiation.

Abstract- Few-femtosecond timing at fourth-generation X-ray light sources | Full Text- Few-femtosecond timing at fourth-generation X-ray light sources | PDF (1,046 KB)- Few-femtosecond timing at fourth-generation X-ray light sources | Supplementary information

Subject terms: Ultrafast photonics | X-rays | Terahertz optics

A planar dielectric antenna for directional single-photon emission and near-unity collection efficiency -pp166 - 169

K. G. Lee, X. W. Chen, H. Eghlidi, P. Kukura, R. Lettow, A. Renn, V. Sandoghdar & S. Götzinger

doi:10.1038/nphoton.2010.312

Researchers exploit a dielectric planar antenna to tailor the angular emission of single photons from an oriented molecule. Record collection efficiency of 96% and detection rates of 50 MHz are demonstrated using a microscope objective at room temperature.

Abstract- A planar dielectric antenna for directional single-photon emission and near-unity collection efficiency | Full Text- A planar dielectric antenna for directional single-photon emission and near-unity collection efficiency | PDF (645 KB)- A planar dielectric antenna for directional single-photon emission and near-unity collection efficiency | Supplementary information

Subject terms: Quantum optics | Terahertz optics | Nanophotonics

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Articles

Nanolasers grown on silicon -pp170 - 175

Roger Chen, Thai-Truong D. Tran, Kar Wei Ng, Wai Son Ko, Linus C. Chuang, Forrest G. Sedgwick & Connie Chang-Hasnain

doi:10.1038/nphoton.2010.315

Based on a CMOS-compatible growth process, researchers successfully demonstrate the bottom-up integration of InGaAs nanopillar lasers onto silicon chips. The resulting nanolaser offers tiny footprints and scalability, making it particularly suited to high-density optoelectronics.

Abstract- Nanolasers grown on silicon | Full Text- Nanolasers grown on silicon | PDF (1,964 KB)- Nanolasers grown on silicon | Supplementary information

Subject terms: Lasers, LEDs and light sources | Nanophotonics

Full-colour quantum dot displays fabricated by transfer printing -pp176 - 182

Tae-Ho Kim, Kyung-Sang Cho, Eun Kyung Lee, Sang Jin Lee, Jungseok Chae, Jung Woo Kim, Do Hwan Kim, Jang-Yeon Kwon, Gehan Amaratunga, Sang Yoon Lee, Byoung Lyong Choi, Young Kuk, Jong Min Kim & Kinam Kim

doi:10.1038/nphoton.2011.12

Scientists describe a size-selective quantum dot patterning technique that involves kinetically controlling the nanotransfer process without a solvent. The resulting printed quantum dot films exhibit excellent morphology and a well-ordered quantum dot structure. This technique allows fabrication of a 4-inch (or larger) thin-film transistor display with high colour purity and extremely high resolution.

Abstract- Full-colour quantum dot displays fabricated by transfer printing | Full Text- Full-colour quantum dot displays fabricated by transfer printing | PDF (4,556 KB)- Full-colour quantum dot displays fabricated by transfer printing | Supplementary information

Subject terms: Displays | Optoelectronic devices and components | Novel materials and engineered structures

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Interview

Sound success -p184

Interview with Lihong Wang

doi:10.1038/nphoton.2011.24

Full Text- Sound success | PDF (319 KB)

현재글Nature photonics v.5 n.3 2011