Undercut Structure Boosts VCSEL Performance
A double intracavity contacted structure developed at the
University of California in Santa Barbara may lead to vertical-cavity surface-emitting lasers (VCSELs) that use lattice-matched distributed Bragg reflectors. Reporting in the March 5 issue of
Applied Physics Letters, the research team described the successful fabrication of a 1560-nm VCSEL that features AlAsSb-based mirrors in an undercut mesa configuration.
The team selectively etched an undercut aperture in the structure using a mixture of citric acid and hydrogen peroxide. The structure reduces heat in the device, enabling 1.05-mW, continuous-wave (CW) operation at 20 °C and CW operation up to 88 °C.
LATEST NEWS
- CLEO Heads to the East Coast
Apr 29, 2024
- Laser-Based Gas Analyzer Developed to Detect Air Pollution
Apr 29, 2024
- Qubits Could be Stored in Flash-Like Memory
Apr 29, 2024
- Exail Signs LLNL Contract, Partners with Eelume
Apr 26, 2024
- Menlo Moves U.S. HQ: Week in Brief: 4/26/2024
Apr 26, 2024
- Optofluidics Platform Keys Label-, Amplification-Free Rapid Diagnostic Tool
Apr 25, 2024
- DUV Lasers Made with Nonlinear Crystals Enhance Lithography Performance
Apr 25, 2024
- Teledyne e2v, Airy3D Collaborate on 3D Vision Solutions
Apr 24, 2024