Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Resistors Enable Adaptive Optics on the Cheap

Photonics Spectra
Jun 2002
The term "adaptive optics" conjures images of complicated and expensive systems. Researchers at Delft University of Technology in the Netherlands hope to change that. In the May 1 issue of Optics Letters, they describe a deformable mirror driven with resistors that cost them less than $100 to build.

The new system, which may find use in scientific and medical applications that do not require fast response times, features 19 off-the-shelf metal-film resistors glued to the back of the 5-cm mirrored silicon wafer. A 20-channel, 8-bit digital-to-analog converter controlled the current to the resistors and, thus, their length. The system displayed a 5-s response time and suffered thermal tremors, but it offered a temporal stability of approximately λ/10 at 633 nm.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!