Characterization of Nanostructures

Nanostructures are physical structures with features on a nanometer scale. With a SuperK supercontinuum white light laser it is possible to characterize nanostructures.

What are nanostructures?

Nanostructures simply refer to physical structures with features on a nanometer scale. Structures relevant for optical characterization include such diverse fields as:

  • Metamaterials
  • Graphene and carbon nanotubes
  • Photonics bandgap structures
  • Surface plasmon waveguides
  • Nanofibers, spheres, rods, etc.
  • Quantum dots

How can I use a SuperK for nanostructure characterization?

Have you ever needed a different wavelength, wider tunability or a more convenient, stable or reliable light source? Then the SuperK white light laser is for you.

The SuperK advanatges

  • Tune and interrogate any structure or resonance (380-2400nm)
  • Single-mode diffraction-limited output ideal for small structures
  • Stable power and excellent pointing stability of the beam
  • Active compensation for drift in setup via Power Lock
  • Reliable and easy to use with zero maintenance

The SuperK supercontinuum laser can give you light anywhere in the 380-2400 nm region, making it a great tool for optical characterization of nanostructures. Many researchers around the World use the SuperK for measurements on nanoparticles, plasmonic waveguides, metamaterials, and many other small structures.

The lasers are compatible with a variety of characterization techniques like Raman spectroscopy, Brillouin light scattering spectroscopy, spectroscopic ellipsometry, SNOM, and s-SNOM where it replaces single-line lasers and traditional broadband sources.

Stability is the key

When characterizing very small structures, the stability of the light source is critical (e.g. for coupling to plasmonic waveguides). As the only supercontinuum source on the market, the SuperK EXTREME comes with our unique Power Lock feature that lets you lock the power anywhere in your setup. This lets you compensate for drift and instabilities in mirrors, lenses, etc. and gives you power stability at your sample in the 0.2-0.5 % range.

SuperK_VARIA_with_Power_Lock
Output through a SuperK VARIA with and without Power Lock. Power Lock improves stability to fractions of a percent.

Power stability is important, but without good pointing stability of the beam, it is worthless. The SuperK EXTREME has the best pointing stability on the market and it is single-mode in the entire spectral range of the source.

You get a stable transmission through our filtering accessories but also a stable coupling to your sample resulting in less noise and better measurements.

A SuperK supercontinuum source can replace all of the following light sources:

  • ASE sources
  • Lamps
  • Single line lasers
  • SLEDs
  • Dye lasers

How others have used the SuperK for nanostructure characterization

 

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