Two approaches are presented for the analysis of laser action in periodic structures. The first one uses the coupled-wave formalism to analyze guided-wave propagation in a periodic waveguide defined by the coupling coefficient and the conditions at the cavity ends. The second analysis is based on...
gain coefficient of ~1960 cm−1, and a long net optical gain lifetime of ~830 ps result in such ultralow optical gain thresholds and lead to record-long stable ASE. Employing specifically engineered core/crown@gradient-alloyed shell heterostructures, we present a linearly polarized single-...
Despite the fact that silica has a much smaller Raman gain coefficient than other materials in similar studies, such as CS2 microdroplets, its very high Q-factor ensured that even a low input power remained trapped long enough in the cavities to build to the necessarily high intensities. In ...
Sign inThreshold Energy In subject area: Engineering A complex phenomenon occurring when an energy threshold is reached which causes measurable or observable damage and material removal. From: Ultraviolet Laser Technology and Applications, 1995 About this pageSet alert...
in contrast to the other BIC modes. We also show that for finite-size resonators the optimal lattice constant providing the lowest radiation is shifted compared to the infinite-size structure. After the transition to the super-BIC regime, we measure the far-field laser image with strong angular...
Thus the gain constant k(Ie)L is a decreasing function of Ie. In the steady state after the buildup transient, the laser intensity inside the resonator is the intensity that decreases the gain per pass to just balance the cavity losses, as then the laser intensity suffers no net change ...
factors of power threshold of high energy laser in the thermal blooming in aspects of numeric and theoretical analyses,and gets the conclusion that the power threshold is proportional to the square of wave length and air flow rate,and is inversely proportional to the absorption coefficient. ...
In this paper, the stability condition of optical resonator is introduced, the power losses of stable resonator and the threshold condition of optical oscillation is discussed, and the formulation of the relationship between the gain coefficient of work substance and the losses factor is derived.关键...
YVO4 usually has a four-time lager gain cross section and a five-time larger absorption coefficient than its c-cut version, and these features bring a-cut Nd:YVO4 laser a much lower threshold power than the c-cut version, and thus most of the Nd:YVO4 crystals applied in Q-switched ...
4) laser energy threshold 激光能量阈值5) light-induce scattering 光致散射 例句>> 6) photo scattering resistance ability 抗光致散射能力 1. The infrared transmittance spectra,the absorption spectra,photo scattering resistance ability,response time and exponential gain coefficient were measured. 测试...