| WARF: P05334US |  |
| High Coherent Power, Two-Dimensional Surface-Emitting Semiconductor Diode Array Laser |
| INVENTORS | • | Dan Botez |
The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a semiconductor laser that provides seven times the power previously seen from surface-emitting semiconductor lasers.
OVERVIEW
A UW-Madison researcher previously described a high-power, single-mode, two-dimensional, semiconductor diode laser formed on a substrate with an anti-guided array of laterally spaced grating surface emitters (see WARF reference number P02180US). However, scaling that device to include longer arrays reduces device efficiency and output power due to a destructive interference effect inherent in devices with long gratings of constant periodicity.
THE INVENTION
The UW-Madison researcher has now developed a semiconductor laser that uses a variable periodicity, or chirped, grating. The grating works with the previous device to prevent the laser emissions from canceling each other out. The grating structure ensures single longitudinal-mode operation and can also be formed to act as a highly efficient selector of the in-phase array mode.
APPLICATIONS
- Non-invasive medical diagnostics
- Biotechnology
- Laser projection systems
- Optical communications
KEY BENEFITS
- Provides seven times the power previously seen from surface-emitting semiconductor lasers
- Enables CW watt-range, stable, single-mode laser light sources
- Single frequency makes it ideally suited for power scalability via frequency multiplexing in external beam–combining configurations
- Simplified packaging as compared to edge-emitting devices
- Capable of providing tens of watts of power for applications such as high-efficiency, high-resolution magnetic resonance imaging (MRI) with noble gases
ADDITIONAL INFORMATION
For More Information About the Inventors
Related Technologies
Intellectual Property Status
Tech Fields
Analytical Instrumentation - Lasers
Medical Imaging - MRI
CONTACT INFORMATION
For current licensing status, please contact our team at
licensing@warf.org
or phone 608.262.4924. (Clicking this link will open a contact form in a popup window. If you have problems viewing the form, try disabling your popup blocker software.)
Since its founding in 1925 as the patenting and licensing organization for the University of Wisconsin-Madison, WARF has been working with business and industry to transform university research into products that benefit society. WARF intellectual property managers and licensing staff members are leaders in the field of university-based technology transfer. They are familiar with the intricacies of patenting, have worked with researchers in relevant disciplines, understand industries and markets, and have negotiated innovative licensing strategies to meet the individual needs of business clients.
