New results concerning flashlamp pumped, colour centre lasers using F+2 centres in LiF:OH- at Nike Free 3 Vs 5
77 K are reported. We study the thermal effects and we measure the threshold, the losses and Nike Free Run 5.0 Review
the gain in the laser cavity. On the other hand, flashlamp pumped, tunable laser emission with (F+2)A colour centres in NaF:Li is obtained for the first time both at 77 K and at room temperature (rt).
We describe explicit horizontal open books on some Seifert fibered 3-manifolds. We show that the contact structures compatible with these horizontal open books are Stein fillable and horizontal as well. Moreover we draw surgery diagrams for some of these contact structures.
In this paper, by means of the method of upper and lower solutions and the monotone iterative technique, the existence of minimal and maximal solutions of the periodic boundary value problem for first-order impulsive functional differential equations is considered.
We report measurements of the optic index of reflection as a function of temperature, n(T), for several highly disordered ferroelectrics: PLZT ceramic [Pb1−xLax(Zr0.65Ti0.35)1−x/4O3 where x = 0.08] and single crystals of Pb3(MNb2)O9 where M = Zn and Mg. The results are qualitatively different from the unusual displacive ferroelectric behavior and the difference is clearly due to local disorder.