Nanotechnology Now

Our NanoNews Digest Sponsors







Heifer International

Wikipedia Affiliate Button


Home > Press > Towards Quantum Dot Lasers with Temperature Independent Threshold

Abstract:
Among the numerous applications envisioned for semiconductor nanocrystals, quantum dot lasers are one of the most interesting. In contrast to bulk materials, the delta-like density of quantum dot electronic states predicts a low, temperature-independent lasing threshold. This gives enhanced device performance compared to other gain media, especially at elevated temperatures. Quantum dots grown by epitaxial techniques have proven to be suitable candidates for potential commercialization of quantum dot lasers. However, colloidal quantum dots offer an interesting low-cost alternative, being synthesized through wet chemistry at low temperature and standard pressure.

Towards Quantum Dot Lasers with Temperature Independent Threshold

Germany | Posted on October 11th, 2012

Now, Iwan Moreels, Gabriele Rainò (IBM Research - Zurich), and co-workers have successfully produced colloidal CdSe/CdS quantum dot-in-rods with an almost constant amplified stimulated emission threshold over a temperature interval from 5-325 K. This feature is unique to quantum dots and highlights their potential as a gain material, suitable for lasing at elevated temperatures. These results will pave the way towards low cost, solution processable quantum dot lasers.

The research was reported in Advanced Optical Materials, a new section in Advanced Materials dedicated to breakthrough discoveries and fundamental research in photonics, plasmonics, metamaterials, and more, covering all aspects of light-matter interactions.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

To get Advanced Optical Materials email alerts click here:

Link to the original paper on Wiley Online Library:

Related News Press

News and information

How do cold ions slide May 24th, 2013

Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013

Discoveries

How do cold ions slide May 24th, 2013

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013

Bacterial spare parts filter antibiotic residue from groundwater May 22nd, 2013

Announcements

How do cold ions slide May 24th, 2013

Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013

Quantum Dots/Rods

Perfectly doped quantum dots yield colors to dye for May 11th, 2013

Researchers use graphene quantum dots to detect humidity and pressure May 8th, 2013

Hamburger nano specialist enlarges the CANdots® product Series by fluorescent nanocrystals Series A plus May 8th, 2013

A step toward optical transistors? McGill researchers demonstrate new way to control light in semiconductor nanocrystals April 9th, 2013

Photonics/Optics/Lasers

How do cold ions slide May 24th, 2013

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Rice unveils method for tailoring optical processors: Arranging nanoparticles in geometric patterns allows for control of light with light May 21st, 2013

Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More












ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project








abbigliamento uomo
Computer Accessories
© Copyright 1999-2013 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE