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Telecoms-wavelength vertical-cavity surface-emitting lasers (VCSELs) capable of operating at up to 110°C with high wavelength stability and low threshold currents.
About
Pioneering work by Lancaster University and collaborators has led to the demonstration of telecoms-wavelength vertical-cavity surface-emitting lasers (VCSELs) capable of operating at up to 110°C with high wavelength stability and low threshold currents. Through the use of self-assembled GaSb quantum rings in the active region, the invention has overcome the limitations of excessive strain that has previously prevented GaAs/AlGaAs distributed Bragg reflector (DBR) VCSELs from emitting at wavelengths beyond ~1 mm. The technology offers low-cost, cooler-free operation with emission at 1150 to 1350 nm with high wavelength-stability and ultra-low threshold current densities. Emission at longer wavelengths is currently under development. Features: - Telecoms wavelengths - Conventional DBR technology on low-cost GaAs substrates - Cooler-free operation - Excellent wavelength stability - Low threshold currents
Key Benefits
Telecoms wavelengths Conventional DBR technology on low-cost GaAs substrates Cooler-free operation Excellent wavelength stability Low threshold currents
Applications
Upstream FTTP laser Datacoms at telecoms wavelengths Proximity sensing, gesture recognition and 3D imaging Optical interconnects LiDAR