Near Field Optical Microscopy And Spectroscopy With Pointed Probes

These mechanisms include raman and infrared absorption for chemical contrast as well as materials contrast based on dielectric dispersion.

Near field optical microscopy and spectroscopy with pointed probes. Aperture based near field optical microscopy as illustrated in figure 2 the spatial resolution x of standard optical. In order to achieve an optical resolution greater than the diffraction limit the resolution limit of conventional optical microscopy the probe tip must be brought within this near field region. Ultrafast spectroscopy of semiconductors and semiconductor nanostructures springer berlin 1996. These mechanisms include raman and infrared absorption for chemical contrast as well as materials contrast based on dielectric dispersion.

Microscopy spectroscopy andsurface modification beyondthe diffraction limit eric betzig andjayk. Many of the attractive features of. Near field scanning optical microscopy nsom or scanning near field optical microscopy snom is a microscopy technique for nanostructure investigation that breaks the far field resolution limit by exploiting the properties of evanescent waves in snom the excitation laser light is focused through an aperture with a diameter smaller than the excitation wavelength resulting in an evanescent. Near field optical microscopy and spectroscopy with pointed probes article pdf available in annual review of physical chemistry 57 1 303 31 february 2006 with 112 reads how we measure reads.

Spectroscopy with pointed probes 305 figure 1 chemical specificity versus spatial resolution for different microscopic techniques. In this review we briefly describe the evolution of the field from the classical aperture based approach toward the development of near field optical microscopy with pointed probes. With the nanometer scale lateral resolution of near field scanning optical microscopes. Near field scanning optical microscopy nsom achieves an excellent product of the two factors.

For nsom the separation distance between probe and specimen surface is typically on the order of a few nanometers. Scanning near field optical microscopy snom is a microscopic technique for nanostructure investigation that achieves sub wavelength spatial resolution by exploiting short ranged interactions between a sharply pointed probe and the sample mediated by evanescent waves. Near field optical microscopy and spectroscopy with pointed probes near field optical microscopy and spectroscopy with pointed probes novotny lukas. Trautman thenear field optical interaction betweenasharpprobeandasampleof interest canbe exploitedtoimage spectroscopicallyprobe ormodifysurfacesataresolution downto 12 nm inaccessible by traditional far field techniques.