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.
Recently, temporal and statistical properties of quasi-CW fiber lasers have attracted a great attention. In particular, properties of Raman fiber laser (RFLs) have been studied both numerically and experimentally [1,2]. Experimental investigation is more challengeable, as the full generation optical bandwidth (typically hundreds of GHz for RFLs) is much bigger than real-time bandwidth of oscilloscopes...
An experimental demonstration of a Moire RBG recorded in PTR glass is described. Two shifted RBGs, having respectively central wavelengths at 1547.2 and 1547.4 nm, were holographically recorded in the same plate of PTR glass using expended beams from a He-Cd laser. Then, the sample was developed for 1 hour at 515 degC. After heat-treatment the sample was cut and polished to thickness equal to 6 mm...
In this work we evaluated the spectroscopic properties of Nd3+-doped photo-thermo-refractive glass (Nd:PTR). Absorption coefficient, Stimulated emission cross section, fluorescence lifetime, and radiative quantum efficiency of Nd:PTR are discussed, which aims at the investigation of the laser performance. The measurement of absorption spectrum of 0.8at.% Nd:PTR was carried out using a spectrophotometer...
Forerunning wave and wakefield induced by a non-relativistic, charged Gaussian bunch moving along a wide-bandwidth, periodic structure have been simulated in time domain. Unusual waveform of the potential function is compared to theoretical predictions and time-domain, multi-mode analytical solution. The numerical experiment demonstrated anomalously high magnitude of the precursor wave. A specific...
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.