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We review our novel approach based on coupled large optical cavity (CLOC) structures for effective suppression of high-order transverse modes in edge-emitting lasers with broadened waveguides. We discuss the main principles of the CLOC laser concept and present our recent numerical and experimental results of the laser operation.
We have developed a laser stabilization system capable of measuring nm-level distance variations between satellites separated on orbit by 250 km. We describe the construction of the reference cavity and show performance results and environmental tests.
We investigated dual-color mid-infrared quantum cascade lasers. We found that due to gain competition mid-infrared modes tend to start lasing in higher order lateral modes. The mid-infrared mode with the lower threshold current reduces population inversion for the second laser with the higher threshold current due to stimulated emission. A theoretical model describing this effect was developed, which...
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