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Controlled blueshift of the resonant wavelength in porous silicon microcavities using ion irradiation
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View: Figures


Image of FIG. 1.
FIG. 1.

Scanning electron micrographs of lines irradiated with fluences of (a) , (b) , (c) , and (d) . The lines were long and wide. The line is arrowed in (a) where it is least obvious.

Image of FIG. 2.
FIG. 2.

Reflectivity spectra of MCs fabricated with different proton fluences. The height of each spectra is normalized to a maximum of 1.0.

Image of FIG. 3.
FIG. 3.

(a) Variation of and vs fluence. Values of are multiplied by 0.2 to normalize the unirradiated result to that of for comparison of their relative rates of change. In (a), (c), and (d) the relevant value for the unirradiated wafer is that shown for a fluence of . (b) vs for an unirradiated wafer and for fluences of and . (c) Average thickness of an etched bilayer period from Fig. 1. Also shown are and and the average optical bilayer thickness vs fluence. (d) Ratio .

Image of FIG. 4.
FIG. 4.

(Color online) Optical reflection images of (a) irradiated squares. (b) Optical reflection images of the painting “La Musique” by Henri Matisse (1939), created by irradiating a area. [(c) and (d)] Different magnifications of vertical lines, each wide, irradiated to form alternating red-green-blue stripes. In each recorded image the sample was illuminated with white light and the reflected light was recorded for using a Nikkon Eclipse ME600 microscope with a objective.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Controlled blueshift of the resonant wavelength in porous silicon microcavities using ion irradiation