Quantum dot
A grain-like structure measuring between a few nanometers to several tens of nanometers in size.
 Quantum effect
Atoms that are confined to a narrow region (on the scale of a few nanometers to several tens of nanometers, 1 nanometer = 1.0 × 10-9 meters) can only assume discrete energy levels. The quantum dot laser technology leverages this property to prevent the flow of excess electrical current, allowing only the minimal necessary current, thereby making it possible to decrease the laser's energy loss and enhance its temperature stability.
 Y. Arakawa et al.
Multidimensional quantum well laser and temperature dependence of its threshold current. Appl. Phys. Lett., Vol.40, p.939-941(1982)
Fujitsu is a leading provider of ICT-based business solutions for the global marketplace. With approximately 170,000 employees supporting customers in 70 countries, Fujitsu combines a worldwide corps of systems and services experts with highly reliable computing and communications products and advanced microelectronics to deliver added value to customers. Headquartered in Tokyo, Fujitsu Limited (TSE:6702) reported consolidated revenues of 4.6 trillion yen (US$50 billion) for the fiscal year ended March 31, 2010. For more information, please see: www.fujitsu.com.
All other company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information provided in this press release is accurate at time of publication and is subject to change without advance notice.
This press release has been revised as of December 17, 2018.
Date: 05 October, 2010
Company: QD Laser, Inc., Fujitsu Limited, The University of Tokyo, , ,
Share this page