@inproceedings{3152223, title = "Quantum dot lasers and relevant nanoheterostructures", author = "Zhukov, Alexey E. and Kryzhanovskaya, Natalia V. and Savelyev, Artem V. and and Nadtochiy, Alexey M. and Arakcheeva, Ekaterina M. and Zubov, Fedor and I. and Korenev, Vladimir V. and Maximov, Mikhail V. and Shernyakov, Yuri and M. and Kulagina, Marina M. and Slovinskiy, Ilia A. and Livshits, Daniil and A. and Kapsalis, Alexandros and Mesaritakis, Charis and Syvridis, and Dimitris and Mintairov, Alexander", year = "2012", pages = "XV-XXIII", publisher = "SPIE - INT SOC OPTICAL ENGINEERING", booktitle = "INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES II", doi = "10.1117/12.2009055", keywords = "Quantum dots; semiconductor laser; microring resonator; two-state lasing", abstract = "Spectral and power characteristics of QD stripe lasers operating in two-state lasing regime have been studied in a wide range of operation conditions. It was demonstrated that neither self-heating nor increase of the homogeneous broadening are responsible for quenching of the ground-state lasing beyond the two-state lasing threshold. It was found that difference in electron and hole capture rates strongly affects light-current curve. Modulation p-type doping is shown to enhance the peak power of GS lasing transition. Microring and microdisk structures (D = 4-9 mu m) comprising 1.3 mu m InAs/InGaAs quantum dots have been fabricated and studied by mu-PL and NSOM. Ground-state lasing was achieved well above root temperature (up to 380 K). Effect of inner diameter on threshold characteristics was evaluated." }