Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Microcavity Tunes over Visible Spectrum

Facebook Twitter LinkedIn Email Comments
A team of researchers from Cambridge University in the UK has built a microcavity that could be suitable as an efficient and tunable wavelength converter.
The cavity enhances the rate of emission at the resonance wavelengths of the cavity while suppressing other wavelengths. The device comprises a thin film of a fluorescent semiconducting polymer combined with an electrically switchable liquid crystal layer. The polymer and the crystal layer are sandwiched between the two cavity mirrors.
The group achieved shifts of 56 nm in wavelength. Unlike filters, microcavities achieve wavelength emission tuning by channeling radiation power at resonant modes. The device absorbed light at short wavelengths in the blue and UV range. It then emitted light in part of the spectrum where there is no control of the emission wavelength.

Photonics Spectra
May 1998
Research & TechnologyTech Pulse

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2020 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.