Operation of Fabry-Perot laser with nonlinear PT-symmetric mirror

• Autorzy: Mossakowska-Wyszyńska Agnieszka , Witoński Piotr , Szczepański Paweł

Identyfikatory

DOI

10.24425/bpasts.2021.139202

• Języki publikacji: EN

Abstrakty

EN

The above-threshold operation of a Fabry-Perot laser with a nonlinear PT (parity time) mirror is investigated. For the first time, the analysis accounts for gain saturation of an active medium as well as gain and loss saturation effects in the PT mirror. The obtained laser output intensity characteristics have been demonstrated as a function of various PT mirror parameters such as: the ratio of the PT structure period to laser operating wavelength, number of PT mirror primitive cells, and gain and loss saturation intensities of the PT mirror gain and loss layers. Two functional configurations of the laser have been considered: laser operating as a discrete device, and as a component of an integrated circuit. It has been shown that, in general, the laser operation depends on the PT mirror orientation with respect to the active medium of the laser. Moreover, when the laser radiation is outcoupled through the PT mirror to the free space, bistable operation is possible, when losses of the mirror’s loss layer saturate faster than gain of the gain layer. Furthermore, for a given saturation intensity of the mirror loss layers, the increase of the saturation intensity of the mirror gain layers causes increasing output intensity, i.e., the PT mirror additionally amplifies the laser output signal.

Słowa kluczowe

EN

lasers; integrated optics; nonlinear optics

PL

laser; optyka zintegrowana; optyka nieliniowa

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2021
• Tom: Vol. 69, nr 6
• Strony: art. no. e139202
• Opis fizyczny: Bibliogr. 28 poz., tab., wykr.

Twórcy

autor

Mossakowska-Wyszyńska Agnieszka

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland

• https://orcid.org/0000-0001-7822-5558

autor

Witoński Piotr

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland

• https://orcid.org/0000-0002-5065-1018

autor

Szczepański Paweł

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland
• National Institute of Telecommunications, ul. Szachowa 1, 04-894 Warsaw, Poland

• https://orcid.org/0000-0002-2509-8724

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