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Newton's Rings in Near-Field Optics



Lori S. Goldner, Jeeseong Hwang, Garnett W. Bryant, Michael J. Fasolka, P Absil, J V. Hryniewicz, F G. Johnson, H Shen, P T. Ho


We show how Newton's rings manifest themselves in near-field scanning optical microscopy and discuss how this effect can be used with topographic imaging to measure correlated roughness of thin films. In conventional optics, transmission through a thin nonabsorbing film depends on film thickness when multiple reflectionsfrom the film boundaries are coherent. Measurements and modeling of the transmission through thin films illuminated by a near-field probe show that these oscillations are present despite the large distribution of transverse wavevectors needed to describe light from the probe.
Applied Physics Letters
No. 5


Correlated roughness, microscopy, near-field optics, near-field scanning optical microscopy, NSOM


Goldner, L. , Hwang, J. , Bryant, G. , Fasolka, M. , Absil, P. , Hryniewicz, J. , Johnson, F. , Shen, H. and Ho, P. (2001), Newton's Rings in Near-Field Optics, Applied Physics Letters, [online], (Accessed April 19, 2024)
Created January 1, 2001, Updated February 17, 2017