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Abstract
In this paper we present a study on temperature and current stability of far-field patterns of lasers based on the coupled large optical cavity (CLOC) concept. Previously it has been shown that the CLOC structures allows effective suppressing of high-order mode lasing in broadened waveguides. For the first time we report on transverse single-mode emission from the CLOC lasers with 4.8 μm thick waveguide. Using broadened waveguide allowed us to reduce the divergence of the far-field patterns down to 14° in continuous-wave (CW) regime. Far-field patterns proved to be insensitive to current and temperature changes.
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1 Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya, 29, 195251, Saint Petersburg, Russia; Ioffe Institute, Saint Petersburg, Russia
2 Ioffe Institute, Saint Petersburg, Russia; St. Petersburg Academic University, Saint Petersburg, Russia
3 Ioffe Institute, Saint Petersburg, Russia