Magnitude and phase-resolved infrared vibrational nanospectroscopy with a swept quantum cascade laser.

@article{Yoxall2015MagnitudeAP,
  title={Magnitude and phase-resolved infrared vibrational nanospectroscopy with a swept quantum cascade laser.},
  author={Edward O Yoxall and Martin Schnell and Stefan Mastel and Rainer Hillenbrand},
  journal={Optics express},
  year={2015},
  volume={23 10},
  pages={13358-69}
}
We demonstrate a method of rapidly acquiring background-free infrared near-field spectra by combining magnitude and phase resolved scattering-type scanning near-field optical microscopy (s-SNOM) with a wavelength-swept quantum cascade laser (QCL). Background-free measurement of both near-field magnitude and phase allows for direct comparison with far-field absorption spectra, making the technique particularly useful for rapid and straightforward nanoscale material identification. Our… CONTINUE READING

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