Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Transmission Through Holes Investigated

Photonics Spectra
Dec 2002
Counterintuitively, shining light through an array of subwavelength-diameter holes can increase the transmission efficiency by orders of magnitude over that predicted by simple diffraction theory. Scientists at Seoul National University, Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Korea Research Institute of Standards and Science, Korea Advanced Institute of Science and Technology and Korea University have confirmed that the coherent interference of surface plasmon waves from the surface surrounding the holes determines the near-field emission patterns and that the first two diffraction orders survive into the far field.

Reporting in the Oct. 21 issue of Applied Physics Letters, the team employed scanning optical microscopy in the work, with a Ti:sapphire laser illuminating patterned samples of gold-coated sapphire. The near-field patterns (left) displayed striped patterns perpendicular to the direction of polarization of the laser. The far-field patterns (right) were sinusoidal, depending on the excitation wavelength.

MicroscopyResearch & Technology

Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.