Effect of Spontaneous Emission on Self-Oscillations in Fiber Lasers with Micro-Optomechanical Resonant Structures

Egorov F.A., Nikitin V.V., Potapov V T Effect of Spontaneous Emission on Self-Oscillations in Fiber Lasers with Micro-Optomechanical Resonant Structures. Journal of Communications Technology and Electronics , 2023 , 68 (2). С. 175-184. ISSN 1064-2269

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Аннотация

Within the balanced approximation of fiber lasers (FLs) considered as distributed systems, an improved mathematical model is constructed that describes the low-frequency dynamics of FLs with mirrors based on optomechanical micro-oscillators (MOs), taking into account the effect of spontaneous emission (SE) localized in the cladding modes of the active fiber (AF). The mechanisms of the effect of SE on the synchronous self-oscillations (SSOs) in the FL–MO laser system are revealed: additional inversion removal in the AF due to the finite path length of SE cladding mode photons in the FL active medium, violation of the condition for the internal resonance in the laser system, and perturbation of MO oscillations by photoinduced force caused by SE. By means of numerical simulation of SSOs in an erbium–ytterbium FL with an MO and experimental studies, the dependence of the SSO frequency on the geometric-optical parameters of the AF and the reflectivity of the AF–environment interface has been established, which can be used to improve the frequency stability of laser pulses in fiber sources of pulsed radiation and create a new class of resonant fiber-optic sensors.

Тип объекта: Статья
Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: Егоров Ф.А., Никитин В.В., Потапов В.Т.
Подразделения (можно выбрать несколько, удерживая Ctrl): 278 лаб. радиофизических измерений
URI: http://cplire.ru:8080/id/eprint/8573
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