OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 2 — Jan. 15, 2014
  • pp: 299–302

Nanostep height measurement via spatial mode projection

N. Hermosa, C. Rosales-Guzmán, S. F. Pereira, and J. P. Torres  »View Author Affiliations


Optics Letters, Vol. 39, Issue 2, pp. 299-302 (2014)
http://dx.doi.org/10.1364/OL.39.000299


View Full Text Article

Enhanced HTML    Acrobat PDF (513 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We demonstrate an optical scheme for measuring the thickness of thin nanolayers with the use of light beam’s spatial modes. The novelty in our scheme is the projection of the beam reflected by the sample onto a properly tailored spatial mode. In the experiment described below, we are able to measure a step height smaller than 10 nm, i.e., one-eightieth (1/80) of the wavelength with a standard error in the picometer scale. Since our scheme enhances the signal-to-noise ratio, which effectively increases the sensitivity of detection, the extension of this technique to the detection of subnanometric layer thicknesses is feasible.

© 2014 Optical Society of America

OCIS Codes
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(130.6010) Integrated optics : Sensors
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 5, 2013
Manuscript Accepted: November 28, 2013
Published: January 8, 2014

Citation
N. Hermosa, C. Rosales-Guzmán, S. F. Pereira, and J. P. Torres, "Nanostep height measurement via spatial mode projection," Opt. Lett. 39, 299-302 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-2-299

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited