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Single-mode lasing of lasers based on a vertical microcavity at room temperature
Russian version
Babichev A. V. 1, Makhov I. S. 2, Kryzhanovskaya N. V. 2, Zadiranov Yu. M. 1, Salii Yu. A.1, Kulagina M. M.1, Blokhin A. A.1, Bobrov M. A.1, Vasiliev A. P.1, Blokhin S. A.1, Maleev N. A.1, Karachinsky L. Ya.3, Novikov I. I.3, Egorov A. Yu.3
1Ioffe Institute, St. Petersburg, Russia
2HSE University, St. Petersburg, Russia
3ITMO University, St. Petersburg, Russia
Email: a.babichev@mail.ioffe.ru
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Single-mode lasing at 300 K was achieved in vertical microcavity microlasers. For lasers with a semiconductor output mirror, the threshold pump power density was 6.5 kW/cm2. The quality-factor and emission wavelength, determined at the lasing threshold, were 8800 and ~ 959.8 nm, respectively. Using a microcavity design with a hybrid output mirror allowed us to increase the quality-factor (to 12360) and decrease the threshold pump power density (to 6.0 kW/cm2). For the microlaser with a hybrid output mirror, the mode-energy shift at a twofold excess of the lasing threshold was 220 μeV. Keywords: microlasers, vertical microcavity, quantum dots, Stranski-Krastanov mechanism, optical reservoir computing.
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