NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Theoretical temperature-dependent branching ratios and laser thresholds of the 3F4 to 3H6 levels of Tm(3+) in ten garnetsThe calculated energy levels, the branching ratios, and the estimated thresholds for thulium operating on the 3F4 to 3H6 transitions are reported. Garnet materials with the general formula A3B2C3O12 are evaluated. Calculations are performed for the A side under the assumption of D2 symmetry. X-ray data available in the literature are used to evaluate the crystal-field components, A sub nm. Even-n components are employed to calculate the crystal-field splittings within the manifold. Thermal occupation factors are determined in a straightforward manner using a Boltzmann distribution for the respective manifolds. Odd-n components are applied to calculate the transition probabilities for electric field transitions. It is determined that the magnetic dipole contributions to the transition probability are comparable to the electric dipole contributions in some cases. Thresholds as a function of the density of thulium atoms are calculated.
Document ID
19920068636
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Filer, Elizabeth D.
(Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Barnes, Norman P.
(NASA Langley Research Center Hampton, VA, United States)
Morrison, Clyde A.
(U.S. Army, Harry Diamond Laboratories, Adelphi MD, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Lasers And Masers
Meeting Information
Meeting: Topical Meeting of the OSA Proceedings on Advanced Solid-State Lasers
Location: Hilton Head, SC
Country: United States
Start Date: March 18, 1991
End Date: March 20, 1991
Sponsors: OSA, IEEE
Accession Number
92A51260
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available