OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 19 — Oct. 1, 2012
  • pp: 4092–4094

Measuring the reflectance of hidden color objects with acoustically modulated laser speckle

Terence S. Leung and Shihong Jiang  »View Author Affiliations


Optics Letters, Vol. 37, Issue 19, pp. 4092-4094 (2012)
http://dx.doi.org/10.1364/OL.37.004092


View Full Text Article

Enhanced HTML    Acrobat PDF (299 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 a technique to measure the reflectance of colored objects, including blue, green, and yellow, hidden behind an opaque slab based on acoustically modulated laser speckle. One colored paper at a time was placed behind a 1 cm thick opaque slab with an air gap of 5 mm. Small periodic movements (nanometer scale) at 200 Hz were induced in the colored paper. A coherent red He–Ne laser illuminated the front of the slab, producing acoustically modulated speckle patterns, which were captured by a CCD camera. The magnitude of the time-varying speckle intensity is indicative of the hidden colored paper’s reflectance.

© 2012 Optical Society of America

OCIS Codes
(300.6480) Spectroscopy : Spectroscopy, speckle
(170.1065) Medical optics and biotechnology : Acousto-optics
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Spectroscopy

History
Original Manuscript: July 18, 2012
Revised Manuscript: August 13, 2012
Manuscript Accepted: August 27, 2012
Published: September 26, 2012

Citation
Terence S. Leung and Shihong Jiang, "Measuring the reflectance of hidden color objects with acoustically modulated laser speckle," Opt. Lett. 37, 4092-4094 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-19-4092


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. D. T. Delpy and M. Cope, Phil. Trans. R. Soc. B 352, 649 (1997). [CrossRef]
  2. D. A. Boas and A. K. Dunn, J. Biomed. Opt. 15, 011109 (2010). [CrossRef]
  3. S. L. Jacques and S. J. Kirkpatrick, Opt. Lett. 23, 879 (1998). [CrossRef]
  4. J. W. Goodman, in Laser Speckle and Related Phenomena, J. C. Dainty, ed. (Springer-Verlag, 1975).
  5. W. Leutz and G. Maret, Phys. B 204, 14 (1995). [CrossRef]
  6. S. Leveque-Fort, Appl. Opt. 40, 1029 (2001). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1. Fig. 2. Fig. 3.
 
Fig. 4.
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited