We report the results of studies of fibre lasers with passive modulators based on light-excited micro-optomechanical resonance structures (micro-oscillators). It is shown that in fibre lasers based on active fibres doped with rare-earth elements (Er, Er/Yb, Yb, Nd), the optomechanical interaction of laser radiation with micro-oscillators of various types (fibre-optic, microvolume) leads to self-oscillations of the characteristics of laser radiation at frequencies of relaxation oscillations and intermode beats synchronised with the frequencies of elastic eigenoscillations of micro-oscillators. It is found that in an ultra-long erbium – ytterbium fibre laser with a nonlinear mirror based on a microcantilever, laser photothermal excitation of the second mode of elastic transverse oscillations of the microcantilever makes it possible to perform passive mode locking exclusively due to Q-switching of the laser cavity. Pulsed lasing with a controlled repetition rate (≈76 kHz), a pulse dur...

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具有微光机械共振结构的光纤激光器中的光机械相互作用

我们报告了基于无源调制器的光纤激光器的研究结果，该无源调制器基于光激发的微光机械共振结构（微振荡器）。结果表明，在基于掺有稀土元素（Er，Er / Yb，Yb，Nd）的活性纤维的光纤激光器中，激光辐射与各种类型的微振荡器（光纤，微体积）的光机械相互作用在与微振荡器的弹性本征振荡频率同步的弛豫振荡和模间拍频处的激光辐射特性的自振荡。发现在具有基于微悬臂梁的非线性镜的超长-光纤激光器中，微悬臂梁的弹性横向振荡的第二模式的激光光热激发使得仅由于激光腔的Q开关而可以执行被动模式锁定。脉冲激光具有受控的重复频率（≈76kHz），脉冲持续时间...