Optical absorption and stimulated emission of neodymium in yttrium orthosilicate

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.59689· OSTI ID:7039037

Beach, R; Shinn, M D; Davis, L; Solarz, R W; Krupke, W F ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

A spectroscopic investigation of the biaxial crystal yttrium orthosilicate doped with Nd{sup 3+} (Nd{sup 3}:Y{sub 2}SiO{sub 5}) has been performed. Spectrally and orientationally resolved emission cross sections necessary for the evaluation of laser performance on the Nd{sup 3+} {sup 4}F{sub 3/2}-{sup 4}I{sub 9/2} and {sup 4}F{sub 3/2}-{sup 4}I{sub 11/2} transitions have been determined. The Judd-Ofelt theory has been applied to measured values of optical absorption line strengths to obtain the orientation averaged intensity parameters: {Omega}{sub 2} = 3.34{center dot}10{sup {minus}20}cm{sup 2}, {Omega}{sub 4} = 4.35{center dot}10{sup {minus}20}cm{sup 2}. Using these intensity parameters, the Nd{sup 3+} {sup 4}F{sub 3/2} metastable state lifetime is predicted to be 225 {mu}s. Measured low Nd concentration {sup 4}F{sub 3/2} lifetimes of 214 {mu}s indicate a high radiative quantum efficiency. Because of the fortuitous Stark level splitting of the Nd{sup 3+} {sup 4}F{sub 3/2} and {sup 4}I{sub 9/2} manifolds, laser operation at twice one of the Cs atomic resonance filter accept ace wavelengths is possible.

• OSTI ID: 7039037
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Vol. 26:8; ISSN 0018-9197
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NEODYMIUM
STIMULATED EMISSION
ABSORPTION SPECTROSCOPY
ENERGY LEVELS
EXPERIMENTAL DATA
J-J COUPLING
MATHEMATICAL MODELS
QUANTUM EFFICIENCY
STARK EFFECT
YTTRIUM SILICATES
COUPLING
DATA
EFFICIENCY
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
INFORMATION
INTERMEDIATE COUPLING
METALS
NUMERICAL DATA
OXYGEN COMPOUNDS
RARE EARTHS
SILICATES
SILICON COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties