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.
We investigated specific common optical parametric generation (OPG) using a 532nm pump beam along the x axis of a square lattice two-dimensional periodically poled lithium tantalate (2D-PPLT). Twin-beam generation are observed with the signal or the idler beams propagating collinearly and the other OPG counterpart non-collinearly to the pump beam due to participation of reciprocal lattice vectors...
Nonlinear photonic crystals such as 2D-PPLT (periodically-poled lithium tantalite) are of great interest for multi-wavelengths frequency conversion thanks to the contribution of different reciprocal lattice vectors (RLV) [1]. Such characteristics facilitates optical parametric generation (OPG), second harmonic generation (SHG), sum-frequency generation (SFG) or difference frequency generation (DFG)...
The signal wavelength of collinear direction is enhanced at two quasi-collinear directions with the generation of two idler wavelengths thanks to simultaneous contribution of reciprocal lattice vectors Km, n in a two-dimensional nonlinear photonic crystal (2D-NLPC).
We have studied the effect of temperature on the birefringence and polarization mode dispersion PMD in standard single mode fibre (SSMF) with elliptical core cross section by using numerical computations. On the basis of simulation we have concluded that PMD fluctuates more rapidly than the stress-induced birefringence. In addition, DGD is inversely proportional to temperature.
Second harmonic generation in the visible has been successfully performed in helium implanted planar waveguides in 10 μm-periodically poled lithium niobate (PPLN) by using second order quasi-phase matching. The conversion efficiency was found to be 40% higher than that of the PPLN bulk crystal.
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.