Self-Modulation of the Radiation from Fiber Lasers with Microcavity Mirrors

A multi-frequency synchronous self-oscillations in fiber lasers with optomechanical microoscillators

“…The P s (t) comb spectrum frequency range is ν ≈ II 5 . Noteworthy is that the P s (t) envelope is qualitatively similar to the envelope presented in [10]. Similar SO(2) comb spectra are observed also at the f rel ≈ f 6,i resonance with ν ≈ I 6 ( II 6 ).…”

“…An important feature of the self−oscillation systems with many degrees of freedom is the possibility of realizing in them multifrequency SO providing reduction of the self−oscillation frequency fluctuations [9], which allows extension of functional capabilities and improvement of the accuracy of devices based on such systems. Notice that, to our knowledge, there are no studies devoted to multifrequency SO in lasers with OMO, except for work [10] where the modes of double−frequency self−oscillations were for the first time realized in a fiber laser with microoscillators. This confirms the topicality of this work which is, to a high extent, an evolution of [10].…”

“…Notice that, to our knowledge, there are no studies devoted to multifrequency SO in lasers with OMO, except for work [10] where the modes of double−frequency self−oscillations were for the first time realized in a fiber laser with microoscillators. This confirms the topicality of this work which is, to a high extent, an evolution of [10]. In view of the scientific and practical importance of erbium−ytterbium FL [6], the studies in this work were performed using the mentioned FL and multifrequency OMO fabricated in the form of a multicomponent planar silicon structure used as a mirror (M) in the laser resonator (Fig.…”

“…MB i have equal thicknesses h ≈ 6 µm but different lengths and widths (l i , b i ). Laser excitation of transverse waves in MB i formed on the common epitaxial plate using anisotropic etching occurs under the light−pressure force (contrary to the photothermal effect in [10]) due to the high reflection factor (R s ≈ 0.9) of the multilayer (SiO 2 + ZrO 2 ) interference film applied on the MB i surfaces. The OMO reflective surface is located in the focal plane of the autocollimation system with a cylindrical lens forming a linear light spot (LLS) (D; d) ≈ (380; 12 µm) in size, which can intersect up to five microbeams interacting with the laser radiation (depending on the orientation angle ϕ and distance l 0 to its center).…”