Abstract
Laser-induced desorption on a nanometer scale using scanning near-field optical microscopy (SNOM) is demonstrated. Pulsed laser-induced desorption of anthracene with completely metallized SNOM fiber tips resulted in a lateral resolution of 70 nm. This became possible due to the use of chemically etched tips with a taper region smaller than 200 μm and cone angles varying from 6 to 30 degrees. These tips are further useful for optical imaging with a very high optical transmission coefficient (up to 10−3), achieving a lateral resolution of 80 nm.
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