Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

High Performance Quantum Cascade Laser

14.11.2012
<strong>Background</strong><br>

Semiconductor lasers generate a significant amount of heat during operation, which causes a number of undesirable effects including increasing the current necessary for a given emission intensity and shorter device lifetime. Especially quantum cascade lasers (QCL) are sensitive to temperature, which results in a reduction in light emission or a cessation of laser operation. <br><br> <strong>Technology</strong><br> The QCL consists of an active zone which comprises a cascade structure and an insulating heat-dissipating zone which is laterally adjoined to the active zone. The active zone, which generates heat, is made from a semiconductor material with high crystalline order. The insulating heat-dissipating zone is made from an electrically insulating, heat conducting material which is identical to the semiconductor material of the active zone. The electrically insulating property of the heat-dissipating material is based on a reduced level of crystalline order compared to the semiconductor material of the active zone. The crystal defects result from growth on an underlying amorphous film. The pre-patterned substrate is made of a robust amorphous material and is able to withstand temperatures of growth and processing up to ~ 600 °C. The active regions are defined prior to epitaxy so that the processing is largely finished (except for metallization) when the structure emerges from the epitaxy reactor. <br><br>

<strong>Benefits</strong><br> <ul> <li>Easy and low cost manufacturing (one growth step, one reactor)</li> <li>Improved heat dissipation </li> </ul><br> <strong>IP Rights</strong><br> European patent EP 1 835 575 B1<br> <strong><br> Origin</strong><br> Humboldt-Universität zu Berlin</p> <p> </p>

Further Information: PDF

ipal GmbH
Phone: +49 (0)30/2125-4820

Contact
Dr. Dirk Dantz

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=2764&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht Versatile wheeled stretcher for rescuing of persons
03.03.2015 | TechnologieAllianz e.V.

nachricht Temperature stabilisation of high-resolution microscopes
02.03.2015 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

European Geosciences Union meeting: programme online, provisional press conference topics

26.02.2015 | Event News

Round Table on Solar Energy Research

18.02.2015 | Event News

40th FEBS Congress 2015 – The Biochemical Basis of Life

09.02.2015 | Event News

 
Latest News

Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency

03.03.2015 | Power and Electrical Engineering

On-Board School Bus Filtration System Reduces Pollutants by 88 Percent

03.03.2015 | Ecology, The Environment and Conservation

Protecting Food Crops From Soil Contaminants

03.03.2015 | Agricultural and Forestry Science

VideoLinks
B2B-VideoLinks
More VideoLinks >>>