Current- and light-controlled switching of lasing wavelengths in InAs/InGaAs/GaAs quantum dot lasers for application in neuromorphic photonics
Maximov M.V. 1, Zubov F.I.1, Beckman A.A.2, Kornyshov G.O.2, Gordeev N.Yu.2, Kharchenko A.A.1, Simchuk O.I.1, Kalyuzhny N.A.2, Shernyakov Yu.M.2
1Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
Email: fedyazu@mail.ru
Influence of the optical pumping by light with wavelength of 1260 nm on the spectra of lasers, based on InAs/GaAs quantum dots operating on the ground state (1260 nm), the excited state (1180 nm), as well as on the both of these states simultaneously (two-state lasing) was investigated. Pumping by the ground state radiation does not change the lasing mode of the devices, which also emit on ground state, but results in a suppression of the excited state lasing. The greater lasing intensity via the excited state, the greater optical injection power is required to suppress it. Keywords: laser, two-state lasing, quantum dots.
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