TY - JOUR N2 - 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. L1 - http://journals.pan.pl/Content/121091/PDF/Z_30_02103_Bpast.No.69(6)_OK.pdf L2 - http://journals.pan.pl/Content/121091 PY - 2021 IS - 6 EP - e139202 DO - 10.24425/bpasts.2021.139202 KW - lasers KW - integrated optics KW - nonlinear optics A1 - Mossakowska-Wyszyńska, Agnieszka A1 - Witoński, Piotr A1 - Szczepański, Paweł VL - 69 DA - 12.10.2021 T1 - Operation of Fabry-Perot laser with nonlinear PT-symmetric mirror SP - e139202 UR - http://journals.pan.pl/dlibra/publication/edition/121091 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -