The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a new concept for the study of spatio-temporal generation regimes in which several time scales coexist in the radiation (one of which is related to the cavity round-trip time). The essence of the concept is that the time dependence of the intensity is investigated in two dimensions, one of which corresponds to the evolution over successive cavity round trips. It is shown that fiber...
We present the novel dissipative parametric instability which leads to pattern formation and pulse train generation in nonlinear optical systems, under zig-zag modulation of the dissipation applied on symmetrically located spectral regions.
The recently discovered dissipative parametric instability is presented in the framework of the universal complex Ginzburg-Landau equation. The pattern formation associated with the instability is discussed in connection to the relevant applications in nonlinear photonics especially as a new tool for pulsed lasers design.
There is a new type of parametric instability that was recently theoretically predicted — dissipative Faraday instability. In this work we experimentally demonstrate this new type of instability by successfully achieving mode-locking in a simple configuration. Applying a combination of passive spatial modulation of spectrally dependent loss and group velocity dispersion, we achieve high harmonic mode-locking...
We experimentally demonstrate a Raman fiber laser with linear cavity based on point-action fibre Bragg grating reflectors and random distributed feedback via Rayleigh scattering in the long fibre providing stable multiple wavelengths (close to ITU grid) output at Watts level.
We demonstrate a fibre laser with a mirrorless cavity that operates via Rayleigh scattering amplified through the Raman effect. The properties of such random distributed feedback laser appear different from those of both traditional random lasers and conventional fibre lasers.
Raman gain at high powers is shown to be saturated homogeneously due to pump depletion. At the same time single-frequency RFL generation is not possible because of four-wave mixing, that is demonstrated experimentally and theoretically.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.