Abstract

Optical properties including radiative quantum efficiencies, cross-relaxation coefficients, refractive index, energy-gap law parameters, and maximum phonon energy are presented for a new low-phonon-frequency, nonhygroscopic host crystal potassium lead chloride (KPb2Cl5) doped with Dy3+ and Nd3+. Assuming that the total decay rate (W) from each level is composed of radiative (Arad), multiphonon (WMP), and concentration-dependent cross-relaxation (Wc) rates (W=Arad+WMP+Wc), we determined radiative quantum efficiencies (ηrad=Arad/W) from emission data for five samples of various Dy3+ concentrations (N0). These results were compared with values calculated from a Judd–Ofelt analysis of the absorption spectrum. This technique required identification of cross-relaxation pathways. A cross-relaxation coefficient k=1.83×10-37 cm6 s-1 (where Wc=kN02) was measured for the Dy3+  6H9/2+6F11/2 level. The measured multiphonon decay rates yielded energy-gap law (WMP[ΔE]B exp[-βΔE]) parameters B=3.72×109 s-1 and β=1.16×10-2 cm, indicating that laser action should be possible to near 9 µm (ΔE=1100 cm-1) in this laser host at room temperature.

© 2001 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical properties of Nd3+- and Tb3+-doped KPb2Br5 and RbPb2Br5 with low nonradiative decay

Katja Rademaker, William F. Krupke, Ralph H. Page, Stephen A. Payne, Klaus Petermann, Guenter Huber, Alexander P. Yelisseyev, Ludmila I. Isaenko, Utpal N. Roy, Arnold Burger, Krishna C. Mandal, and Karel Nitsch
J. Opt. Soc. Am. B 21(12) 2117-2129 (2004)

Optical spectroscopy and energy transfer of Er3+/Ce3+ in B2O3-doped bismuth-silicate glasses

Xunsi Wang, Qiuhua Nie, Tiefeng Xu, Shixun Dai, Xiang Shen, and Liren Liu
J. Opt. Soc. Am. B 24(4) 972-978 (2007)

Effect of chloride ions' introduction on structural, thermal stability, and spectroscopic properties in Yb3+Er3+-codoped germanate-bismuth-lead glasses

Hongtao Sun, Lili Hu, Lei Wen, Zhongchao Duan, Junjie Zhang, and Zhonghong Jiang
J. Opt. Soc. Am. B 22(12) 2601-2609 (2005)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (7)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (36)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription