Nd 3+ 掺杂硫系玻璃微球荧光腔量子电动力学增强效应

GEORGE E. PETERSON, Paul M. Bridenbaugh

Relaxation processes in Nd are studied. We find that resonance coupling between Nd and other rare earth ions seems to exist. Nd plus Yb in Na0.5Gd0.5WO4 results in a coupled system in which the Yb may be caused to fluoresce by pumping the Nd. Radiation trapping is found to play only a minor role.

宋骞, 张远程

王圣智 Sheng-zhi WANG, 王敏杰 Min-jie WANG, 马腾飞 Teng-fei +3 more

Tasoltan T. Basiev, Alexander Ya. Karasik, А. А. Корниенко +2 more

A comparison of the theoretical calculations with the results of experiments on high-resolution laser spectroscopy made it possible to reveal the fine structure that arises in the supersensitive 4 I 9/2 ↔ 4 G 5/2 transition as a result of a strong coherent interaction in the Nd 3+ ion pair in the CaF 2 crystal and construct the level splitting diagram for the ground and excited states of impurity Nd-Nd nanoclusters.

廖庆洪 Liao Qinghong, 宋梦林 Song Menglin, 孙建 SUN Jian +1 more

Michael P. Koselja, Jiří Kubelka, Jiří Kvapil

Behavior of radiation of Nd:YAP and Nd:YAG in a resonator with extremely low Q-value have been studied. The light pulses of the form discrete spikes around 1.08 micrometers have been observed using a relatively low pumping energies in Nd:YAP. The formation of these pulses has threshold character. Additional measurement such as second harmonic generation, far field distribution and spectral behavior have shown that emitted pulses have a typical laser character. Derived value of threshold gain parameter with material losses (g0 - (alpha) ) for threshold energy is 0.581 cm-1. No similar effect was observed for Nd:YAG, even for four timeshigher value of threshold energy than Nd:YAP. Obtained results demonstrate the cooperative effects of Nd3+ ions in Nd:YAP through a correlation between electromagnetic and crystal field.