Long-wavelength infrared interminiband quantum cascade lasers operating at lambda = 11 mu m are reported. The structures consist of twenty-five superlattice active regions alternated with electron injectors, all. implemented with AllnGas/GalnAs 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 x 10(-4) nm K-1 at cryogenic temperatures was demonstrated.
Long-wavelength (lambda congruent to 11 mu m) interminiband Fabry-Perot and distributed feedback quantum cascade lasers
Tredicucci A;
1998
Abstract
Long-wavelength infrared interminiband quantum cascade lasers operating at lambda = 11 mu m are reported. The structures consist of twenty-five superlattice active regions alternated with electron injectors, all. implemented with AllnGas/GalnAs 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 x 10(-4) nm K-1 at cryogenic temperatures was demonstrated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
