Electrically-pumped disordered photonic-crystal lasers in the mid-infrared regime at λ∼ 10 µm have been demonstrated for the first time based on quantum cascade lasers. Both the extended and highly-localized lasing modes are generated by adjusting the degree of disorder.
Electrically pumped random lasers in the mid-infrared regime at λ∼ 10 μm have been demonstrated for the first time to our knowledge. The laser is based on a quantum cascade (QC) gain media with designed filling fractions of scatterers.
An index-guided zinc oxide random laser array was designed and fabricated to achieve spatial overlapping of random spectral modes between the adjacent random cavities. Hence, the number of lasing spectral modes of the laser array can be limited by the phenomenon of spectral repulsion. In addition, the total spectrally coherent emission power can be enhanced by increasing the number of random cavities.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.