Abstract
One of the most promising extension of the photon scanning tunneling microscope (PSTM) is its use as a locally resolved spectroscopic tool. The infrared (IR) spectral window offers a wide variety of interesting applications since many materials have a well-defined signature in this range. We have undertaken the experimental modifications that are necessary to operate the existing PSTM’s in the IR domain. In this work, we present preliminary data obtained with two IR light sources: an extended source (Globar type) and the free electron IR laser source (CLIO) available at LURE (Orsay). In both cases, the evanescent field has been detected with a fluoride glass optical fiber and the characteristic decay is reproducibly observed. On the basis of these results, we discuss the current limits of spatial and spectral resolutions. Mainly, we conclude that a spectral resolution of about 10 cm−1 over an area of 1μm × μm is possible to achieve.
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© 1993 Springer Science+Business Media Dordrecht
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Piednoir, A., Creuzet, F., Licoppe, C., De Fornel, F. (1993). First Specifications of a PSTM Working In the Infrared. In: Pohl, D.W., Courjon, D. (eds) Near Field Optics. NATO ASI Series, vol 242. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1978-8_35
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DOI: https://doi.org/10.1007/978-94-011-1978-8_35
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4873-6
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