Lens developed for hard x-ray nanoprobe beamline achieves 11 nm focal spot

x-ray_wavefront
Image shows propagation of a reconstructed wavefront, revealing the focusing performance of a multilayer Laue lens developed for the HXN Beamline at NSLS-II. (Image: BNL)

Upton, NY--At the National Synchrotron Light Source II (NSLS-II) now under construction at Brookhaven National Laboratory (BNL), 12 keV x-rays produced by the Hard X-ray Nanoprobe beamline (HXN) have now been focused down to an 11 nm spot size.1 The BNL researchers used a novel x-ray optic called a multilayer Laue lens (MLL), which consists of nested approximately cylindrical layers that focus hard x-rays via grazing incidence.

The researchers analyzed their MLL's focusing performance using a technique known as ptychography. "With ptychography, we can visualize how the x-rays are traveling from the lens to the focus and to an arbitrary point in the optical path. Therefore, we do not have to use conventional knife-edge scans to quantify lens aberrations," says Xiaojing Huang, one of the researchers. The ptychography analysis quantified the lens aberrations at a 0.3 wave period, very close to a quarter wave period. This represents a rigorous threshold value for "diffraction-limited" focusing.

The NSLS-II will enable scientists to image structures at ever-smaller spatial scales. HXN's long-range goal is to achieve a resolution of 1 nm. Hard x-rays exhibit excellent structural, elemental and chemical sensitivity and are particularly suited for in-situ studies that are challenging for electrons.

The Brookhaven-fabricated MLL has a 43-micron aperture (the largest yet reported MLL size). It accepts substantially more x-rays than earlier MLLs and offers a significantly larger working distance, needed for in-situ experiments. It also contains a total of 6,510 layers, with thicknesses ranging from 4 to 21 nm.

Source: http://www.bnl.gov/newsroom/news.php?a=24676

REFERENCE:

1. Xiaojing Huang et al., Scientific Reports 3, Article number: 3562. DOI: 10.1038/srep03562

 

 

 

Most Popular Articles

Webcasts

Multichannel Spectroscopy: Technology and Applications

This webcast, sponsored by Hamamatsu, highlights some of the photonic technology used in spectroscopy, and the resulting applications.

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...

Fracking, climate change, and lasers:  new tools to reduce fugitive methane emissions

This webcast, sponsored by Hamamatsu Corporation, covers recent developments and field deployments of compact quantum-cascade-laser (QCL)-based methane senso...

Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...
White Papers

Narrow-line fiber-coupled modules for DPAL pumping

A new series of fiber coupled diode laser modules optimized for DPAL pumping is presented, featur...

Accurate LED Source Modeling Using TracePro

Modern optical modeling programs allow product design engineers to create, analyze, and optimize ...

Optical Isolators Improve Engraving Performance of Pulsed Fiber Lasers

The deleterious effects of back reflections on pulsed fiber lasers used in marking and engraving ...
Technical Digests

WAVELENGTH-SWEPT LASERS: Dispersion-tuned fiber laser sweeps over a 140 nm range for OCT

By eliminating the use of mechanical tunable filters and instead tuning by intensity-modulation i...

Keeping pace with developments in Raman spectroscopy for molecular and nanoparticle research

For demanding or custom spectroscopy solutions, care must be taken in selecting and integrating a...

HIGH-POWER FIBER LASERS: Working in the kilowatt regime

High-power materials-processing fiber lasers are available in an increasing variety of forms, as ...

Click here to have your products listed in the Laser Focus World Buyers Guide.

RELATED PRODUCTS

Phantom v1610

Phantom v1610 high-speed digital camera can shoot 1 million FPS.

Phantom v711

Phantom v711 high-speed digital camera

Evolve 128 EMCCD Camera

Quantitative high performance with extreme sensitivity for low-light applications.

RELATED COMPANIES

Surface Optics Corp

Designs and manufactures hyperspectral and multispectral imagers operating from the ult...

Optics Balzers AG

Possesses comprehensive know-how in optical thin-film coatings and components, glass pr...

Cremat Inc

Manufactures and supplies charge-sensitive preamplifiers for use in nuclear and x-ray d...
Social Activity
  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS