Patterned Metallization for Hybrid Metal-Semiconductor Mirror of High ReflectivityTechnology #ua17-092
Questions about this technology? Ask a Technology Manager
Title: Patterned metallization for hybrid metal-semiconductor mirror of high reflectivity
Invention Summary: Researchers at the University of Arizona have designed a novel hybrid metal-semiconductor mirror for use with VECSELs. A novel method of deposition incorporating a patterned mask allows for the use of gold in conjunction with GaAs. The DBR thickness is reduced, as is the thermal impedance, resulting in high refelectivity and high gain.
Background: Vertical External Cavity Surface Emitting Lasers (VECSELs) typically have low gain that requires a highly reflective mirror of at least 99.9% reflectivity to be attached to the gain medium. Most DBR mirrors used for this purpose have a large number of layered pairs of AlGaAs/AlA, and at longer wavelengths, the materials are changed to InP-based materials. They are still thick and thus have high thermal impedance.
* Reduced thermal impedance and higher gain
* Increased power efficiency
* Covers both the pump and the laser signal wavelengths
* High powered VECSELs
* Microwave and Terahertz photonics
* Medical imaging sources
Contact: Amy Phillips
refer to case number UA17-092