Image formation in near-field infrared microscopy

Dmitrii M. Simanovski; Daniel V. Palanker; Philip Huie; Todd I. Smith

doi:10.1117/12.383347

21 April 2000 Image formation in near-field infrared microscopy

Dmitrii M. Simanovski, Daniel V. Palanker, Philip Huie, Todd I. Smith

Proceedings Volume 3922, Scanning and Force Microscopies for Biomedical Applications II; (2000) https://doi.org/10.1117/12.383347
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

Abstract

In this paper we discuss the mechanisms of image formation in the mid-IR of a transmission mode near-field microscope are studied. It is found that the amount of light propagating from a sub-wavelength aperture through a flat substrate strongly increases the tip nears the same. This effect tends to generate topographic artifacts in near-field images that can be eliminated through the use of flat sample preparation techniques. The transmitted power is strongly influenced by the refractive index of the sample, leading to a substantial difference between a near-field and a far- field spectrum. A phenomenological model, which makes predictions in good agreement with experiment, describing tunneling of light through a sub-wavelength aperture into a substrate is developed. The model predicts spectral sensitivity enhancement with decreasing aperture size.

Citation Download Citation

Dmitrii M. Simanovski, Daniel V. Palanker, Philip Huie, and Todd I. Smith "Image formation in near-field infrared microscopy", Proc. SPIE 3922, Scanning and Force Microscopies for Biomedical Applications II, (21 April 2000); https://doi.org/10.1117/12.383347

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available