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

Team Builds More Efficient Quantum Cascade Laser

Photonics Spectra
Feb 1999
From chemical spectroscopy to free-space optical communications, a growing number of applications can benefit from lasers emitting in the IR between 8 and 12 µm. In recent years, many have looked closely at quantum cascade laser technology for these types of applications.
Now Manijeh Razeghi at the Center for Quantum Devices at Northwestern University in Evanston, Ill., has changed the method of growing the material used in the quantum wells. Instead of using solid-state molecular beam epitaxy, her team used gas molecular beam epitaxy, which enhanced the quality of the material. Razeghi also altered the method of doping the material and made changes in the design of the waveguide. These adjustments led to a quantum cascade laser operating at up to 140 K with a threshold current density of 2.5 kA/cm2.

CommunicationsResearch & TechnologyspectroscopyTech Pulselasers

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.