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Showing 1–2 of 2 results
Advanced filters: Author: Tadataka Edamura Clear advanced filters

  • Nanfang Yu and colleagues show that plasmonics can be used to reduce the spread of laser beams. They demonstrate their technique using a quantum cascade laser, and show that by defining a metallic subwavelength slit and grating onto the facet of the laser, a beam divergence of 2.4 degrees can be achieved. The technique can potentially be used to collimate the beams from a variety of different lasers.

    • Nanfang Yu
    • Jonathan Fan
    • Federico Capasso
    Research
    Nature Photonics
    Volume: 2, P: 564-570

  • Decreasing the acquisition time of spectroscopies permits measurement of dynamic systems to be obtained at increasingly high speeds. Here, a time-stretch mid-infrared spectrometer is presented, operating at eighty million spectra per second and tested via absorption measurements of two molecular species.

    • Akira Kawai
    • Kazuki Hashimoto
    • Takuro Ideguchi
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-6