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DOI: 10.17586/1023-5086-2023-90-08-03-16
УДК: 621.373.826; 681.7.069.24
Single-mode lasing in ring cavity surface emitting lasers
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Publication in Journal of Optical Technology
Бабичев А.В., Колодезный Е.С., Гладышев А.Г. и др. Одночастотная генерация в квантово-каскадных лазерах с кольцевым резонатором // Оптический журнал. 2023. Т. 90. № 8. С. 3–16. http://doi.org/10.17586/1023-5086-2023-90-08-03-16
Babichev A.V., Kolodeznyi E.S., Gladyshev A.G., Kharin N.Yu., Panevin V.Yu., Shalygin V.A., Voznyuk G.V., Mitrofanov M.I., Slipchenko S.O., Lyutetskii A.V., Evtikhiev., V.P., Karachinsky L.Ya, Novikov I.I., Pikhtin N.A., Egorov A.Yu. Single-mode lasing in ring cavity surface emitting lasers (In Russian) // Opticheskii Zhurnal. 2023. V. 90. № 8. P. 3–16. http: doi.org/10.17586/1023-5086-2023-90-08-03-16
Subject of study. Distributed-feedback ring cavity surface emitting quantum-cascade lasers. Aim of study. Realization of stable single-mode emission in ring cavity surface emitting quantum-cascade lasers through a Bragg grating formed by direct ion lithography. Method. Implementation of the selection of longitudinal whispering gallery modes due to the fabrication of a second-order Bragg grating in the top waveguide cladding layers based on InP using direct (focused) ion-beam lithography. Main results. The possibility of implementing stable single-mode emission in distributed-feedback ring cavity surface emitting quantum-cascade lasers with a Bragg grating formed by direct ion-beam lithography is demonstrated. An increase in the etching depth of the grooves of the Bragg grating to 2.8 µm made it possible to implement stable single-mode emission at a temperature of 83 K. Single-mode emission is observed at a wavelength of 7.45 µm with a threshold current density of approximately 2 kA/cm2. The maximum side mode suppression ratio was 25 dB. Practical significance. Single-mode distributed-feedback ring cavity surface emitting quantum-cascade lasers are promising for the creation of compact gas sensors, in which a laser and a photodetector of the mid-infrared spectral range are monolithically integrated on one chip.
superlattices, quantum-cascade laser, distributed-feedback ring cavity, single-mode lasing, indium phosphide
Acknowledgements:the authors from ITMO University (Babichev A.V., Kolodeznyi E.S., Gladyshev A.G.) acknowledge support in part by the Russian Science Foundation (Project No. 20-79-10285, https://rscf.ru/project/20-79-10285/) for the heterostructure epitaxy, laser fabrication and output characteristic study. The authors from ITMO University (Karachinsky L.Ya., Novikov I.I.) acknowledge support in part by Advanced Engineering Schools Federal Project for the study by scanning electron microscopy. The author from ITMO University (Shalygin V.A.) acknowledge supports in part by the Russian Science Foundation (Project No. 21-12-00304, https://rscf.ru/project/21-12-00304/) for the optimizing the etching modes of Bragg grating grooves.
OCIS codes: 140.3410, 140.3570, 140.5965
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