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

Bell Labs Claims Record for Mid-IR Diode Laser

Facebook Twitter LinkedIn Email Comments
ATLANTA, Ga., March 23 -- Bell Labs has unveiled what it says is the world's highest-power mid-infrared semiconductor laser. According to the Lab's Claire Gmachl, the experimental quantum-cascade laser has more than a thousand times the output power of any commercial semiconductor laser operating in the mid-infrared wavelength region.
Pulsed at room temperature, it produces about half a watt of power; in continuous-wave operation and cooled to about 100 degrees below zero Fahrenheit, it produces a full watt. QC lasers operate via electrons cascading down an energy staircase, producing photons as they hit each step along the way. Gmachl demonstrated that adding stages to QC lasers increases their output power. Electrons in the new laser cascade down 75 steps instead of 20 or 30 as in earlier QC lasers.
Mar 1999
News & Featuressemiconductor laserslasers

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2020 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
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.