Long-wavelength infrared interminiband quantum cascade lasers operating at λ = 11 μm are reported. The structures consist of twenty-five superlattice active regions alternated with electron injectors, all implemented with AlInGas/GaInAs grown lattice matched to InP by molecular beam epitaxy. Pulsed operation in Fabry-Perot devices has been achieved up to 135 K with 50 mW peak power at 90 K. Single-mode emission has been obtained with distributed feedback lasers based on loss gratings. These devices operated with a 30 dB side-mode suppression ratio and 50 mW peak power at liquid-nitrogen temperature. Temperature-tuning with a wavelength shift of 3.11×10-4 nm K-1 at cryogenic temperatures was demonstrated.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry