Potentiality of Pr~(3+)- and Pr~(3+) + Ce~(3+)-doped crystals for tunable UV upconversion lasers

S. Nicolas; E. Descroix; M.F. Joubert; Y. Guyot; M. Laroche; R. Moncorge; R.Yu. Abdulsabirov; A.K. Naumov; V.V. Semashko; A.M. Tkachuk; M. Malinowski

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Potentiality of Pr~(3+)- and Pr~(3+) + Ce~(3+)-doped crystals for tunable UV upconversion lasers

机译：Pr〜（3+）和Pr〜（3+）+ Ce〜（3+）掺杂晶体对可调UV上转换激光器的潜力

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Gain experiments based on the interconfigurational 4f5d to 4f~2 optical transitions in praseodymium-doped fluoride crystals were achieved. The measurements were performed under upconversion pumping of the 4f5d excited configuration via the ~3P_J, ~1I_6 intermediate levels of the 4f~2 configuration, using a pump-probe set-up with three synchronized Q-switched nanosecond pulsed lasers. In spite of this two-step excitation, optical losses, due excited state absorption (4f5d → conduction band transition) leading to Pr~(3+) ion photoionisation and color center formation, were too high to observe any amplification. However, these losses were found definitely weaker in fluoride crystals (Pr:LiYF_4, Pr: LiLuF_4) than in oxides (Pr:YAlO_3) and, probing the 5d → 4f emission of Ce~(3+) under two-step excitation pumping of the Pr~(3+) 4f5d states in co-doped Pr,Ce:LiLuF_4 crystals, no losses were detected at all.

机译：基于掺ody氟化物晶体中互构的4f5d至4f〜2光学跃迁进行了增益实验。使用具有三个同步Q开关纳秒脉冲激光器的泵浦探针装置，通过4f〜2配置的〜3P_J，〜1I_6中间能级在4f5d激发配置的上转换泵浦下进行测量。尽管进行了两步激发，但是由于导致Pr〜（3+）离子光电离和色心形成的激发态吸收（4f5d→导带跃迁）引起的光损耗仍然很高，无法观察到任何放大。然而，发现这些损失在氟化物晶体（Pr：LiYF_4，Pr：LiLuF_4）中肯定比在氧化物（Pr：YAlO_3）中更弱，并且在两步激发泵浦下探测Ce〜（3+）的5d→4f发射。共掺杂的Pr，Ce：LiLuF_4晶体中的Pr〜（3+）4f5d态完全没有发现损耗。

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来源
《Optical Materials》 |2003年第2期|p.139-146|共8页
作者
S. Nicolas; E. Descroix; M.F. Joubert; Y. Guyot; M. Laroche; R. Moncorge; R.Yu. Abdulsabirov; A.K. Naumov; V.V. Semashko; A.M. Tkachuk; M. Malinowski;
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作者单位

Laboratoire du Traitement du Signal et Instrumentation (LTSI) UMR 5516 CNRS Universite Jean Monnet 23 rue du Docteur Paul Michelon F-42023 Saint-Etienne France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
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Potentiality of Pr~(3+)- and Pr~(3+) + Ce~(3+)-doped crystals for tunable UV upconversion lasers

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