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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 12, Iss. 10 — Oct. 1, 1995
  • pp: 1981–1992

Direct measurements of the terminal laser level lifetime in neodymium-doped crystals and glasses

Camille Bibeau, Stephen A. Payne, and Howard T. Powell  »View Author Affiliations


JOSA B, Vol. 12, Issue 10, pp. 1981-1992 (1995)
http://dx.doi.org/10.1364/JOSAB.12.001981


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Abstract

We have measured the terminal level lifetime (τ11/2) for the 1-μm neodymium transition in several laser media, using a novel pump (2.41-μm) and probe (1.06-μm) technique. This method allows us to populate the 4I13/2 level directly and subsequently to monitor the terminal level 4I11/2 population as a function of time by observing the change in integrated fluoresence of the 0.88-μm emission for each time delay between the pump and the probe pulses. We developed a computer model to analyze the data and determined the upper and lower limits for the τ11/2 lifetime. The results for some of the materials investigated are 115–225 ps for Nd:Y3Al5O12, 250–450 ps for Nd:LG-750 (phosphate glass), 535–740 ps for Nd:LG-660 (silicate glass), 896–1900 ps for Nd:YAlO3, and 10.5–20 ns for Nd:YLiF4. In addition, we found the lifetimes to be independent of the neodymium doping concentration for the phosphate and silicate glass samples investigated.

© 1995 Optical Society of America

Citation
Camille Bibeau, Stephen A. Payne, and Howard T. Powell, "Direct measurements of the terminal laser level lifetime in neodymium-doped crystals and glasses," J. Opt. Soc. Am. B 12, 1981-1992 (1995)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-10-1981

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