Ytterbium – an overview | ScienceDirect Topics, RP Photonics Encyclopedia – ytterbium-doped gain media …
RP Photonics Encyclopedia – ytterbium-doped gain media …
RP Photonics Encyclopedia – ytterbium-doped gain media …
The absorption spectrum of Yb 3+ in silica fibers consists of an intense, broad peak centered at 975 nm. The absorption spectra of both Er 3+ and Er 3+ /Yb 3+ co-doped fibers are shown in Fig. 7.17 .
Ytterbium-doped materials are interesting as diode-pumped, tunable, and ultrafast high-power laser sources because of their broad absorption and emission bandwidths and their low thermal loading. Additional benefits are the long fluorescence lifetime (1–2ms), which is desirable for ultrashort pulse amplification of Q switching, and the simple electronic structure, which avoids loss processes such as.
Saturated Absorption Spectroscopy of Ytterbium J. Grad, A. Hansen, and S. Gupta Department of Physics, University of Washington, Seattle, WA, 98195 Introduction This project involves the development of a saturated absorption laser spectroscopy (SALS) apparatus for stabilizing lasers to optical transitions in the ytterbium atom. SALS is a two beam, AbslraeL The absorption spectrum of ytterbium in the wavelength range 1200-2000 A has been recorded in the first order of a 3 m spectrograph equipped wilh a 6000 line mm-‘ holographic grating, using synchrotron radiation as the background source of contin- uum.
We experimentally determined the absorption cross-sections for a potassium ytterbium gadolinium double tungstate, KYb 0.57 Gd 0.43 (WO 4) 2, thin film grown lattice matched onto an undoped KY(WO 4) 2 substrate. At room temperature, the peak cross-section value at 981 nm and the overall absorption spectrum are very similar to those of Yb-doped …
absorption spectrum of the rubidium salt has a rather com-plex character because of the channel-like structure and expected distortion. Therefore, the interpretation of the spectra is not easy. Typical emission spectra of ytterbium doped compounds are shown in Fig. 3. The spectra of the rubidium double phosphates demonstrate fine emission bands …
The latter is calculated from the ratio of non-radiative deactivation process (? obs) to the radiative lifetime (? rad). 26 ? rad of Yb(iii) can be estimated from f–f transition absorption spectra based on a modified Einstein equation: 32 (2) where c is the speed of light in cm s.
Even though the erbium ions could directly absorb radiation e.g. at 980 nm, ytterbium codoping can be useful because of the higher ytterbium absorption cross sections and the higher possible ytterbium doping density in typical laser glasses, so that a much shorter pump absorption length and a higher gain can be achieved.
tion spectra of some of the elements in this group. In addition to 2500 lines reported for cerium, neodymium, and samarium, Paul has also indicated (2) that the absorption spectra have been observed for europium, dysprosium, holmium, thulium, and ytterbium , but their wavelengths have not been recorded in the literature.
Thulium, Lutetium, Erbium, Yttrium, Holmium
