International Conference of Physicists.SPb, October 20-24, 2025, Saint Petersburg

Study of the emission from a microdisk laser monolithically integrated with an optical waveguide

I. S. Fedosov^a, N. A. Fominykh^a, N. V. Kryzhanovskaya^a, I. S. Makhov^a, S. A. Mintairov^b, N. A. Kalyuzhnyy^b, M. S. Solodovnik^c, N. E. Chernenko^c, N. A. Shandyba^c, A. E. Zhukov<sup>a

a</sup> National Research University "Higher School of Economics", St. Petersburg Branch
^b Ioffe Institute, St. Petersburg
^c Southern Federal University, Rostov-on-Don

Abstract: The power and spectral characteristics of the radiation of a semiconductor microdisk laser with a diameter of 40 $\mu$m, monolithically integrated with an optical waveguide, have been studied. To reduce absorption in the waveguide, current pumping was used. In the light.current dependence, features associated with the onset of generation at a longer-wavelength resonance are observed. When this resonance falls within the region of weak waveguide absorption, an increase in output power is observed. Applying a forward bias to the waveguide makes it possible to increase the extracted power by more than 1.5 times.

Received: 05.05.2025
Revised: 24.06.2025
Accepted: 18.09.2025

DOI: 10.61011/FTP.2025.07.62001.8046