Technologies
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WARF: P01034US

Vertical-Cavity Surface-Emitting Lasers with Anti-Resonant Reflecting Optical Waveguides


INVENTORS -

Luke Mawst, Delai Zhou

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a VCSEL that uses an anti-resonant reflecting waveguide ring to result in substantially single mode operation at relatively high powers.
OVERVIEWVertical-cavity surface-emitting lasers (VCSELs) are made by constructing the laser optical cavity in the direction perpendicular to the active layer. Light is emitted vertically from the surface of a fabricated wafer, creating a device with the processing properties of an LED and the optical output properties of a laser diode. VCSEL lasers can be used in a variety of applications, including fiber optic networks, blood and gas monitoring devices and laser printers.

Current research efforts in VCSEL technology are directed at increasing the single-mode output power. This is highly desirable for applications requiring free-space propagation, such as optical reading and writing.
THE INVENTIONUW–Madison researchers have developed a VCSEL that uses an anti-resonant reflecting optical waveguide (ARROW) to reduce the edge radiation losses for the fundamental mode. This structure is capable of providing single-mode output at higher powers than conventional VCSEL devices.
APPLICATIONS
  • Can make single-mode VCSELs with output powers useful in laser printing, telecommunications, optical recording and DVDs
KEY BENEFITS
  • VCSELs have compact size, low-threshold and high-fiber coupling efficiency.
  • VCSELs offer a simplified fabrication process and allow wafer-level characterization.
  • VCSELs can provide single-mode output at higher power than other devices currently available and with larger apertures.
  • Various material systems commonly used in semiconductor lasers can be used to form the this laser.
ADDITIONAL INFORMATION
For More Information About the Inventors
Contact Information
For current licensing status, please contact Jeanine Burmania at jeanine@warf.org or 608-960-9846.
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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.