Measurement of the lifetimes of the z2F5/2, z2D3/2, z4G5/2, and y2D3/2 states of lanthanum*

B. R. Bulos; A. J. Glassman; R. Gupta; G. W. Moe

doi:10.1364/JOSA.68.000842

Measurement of the lifetimes of the z²F_5/2, z²D_3/2, z⁴G_5/2, and y²D_3/2 states of lanthanum

B. R. Bulos, A. J. Glassman, R. Gupta, and G. W. Moe

Journal of the Optical Society of America
Vol. 68,
Issue 6,
pp. 842-845
(1978)
•https://doi.org/10.1364/JOSA.68.000842

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B. R. Bulos, A. J. Glassman, R. Gupta, and G. W. Moe, "Measurement of the lifetimes of the z²F_5/2, z²D_3/2, z⁴G_5/2, and y²D_3/2 states of lanthanum*," J. Opt. Soc. Am. 68, 842-845 (1978)

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History
- Original Manuscript: December 16, 1977
- Published: June 1, 1978

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Abstract

The lifetimes of the 5d 6s (¹D)6p z²F_5/2, 5d 6s (¹D)6p z²D_3/2, 5d²(³F)6p z⁴G_5/2, and 5d 6s (³D)6p y²D_3/2 states of La i have been measured using time-resolved spectroscopy following excitation by a pulsed dye laser. The measured values for the lifetimes are 120 ± 6, 165 ± 8, 51 ± 4, and 18 ± 3 ns, respectively.

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State	⁵⁷La¹³⁹ z²F_5/2	⁵⁷La¹³⁹ z²D_3/2	⁵⁷La¹³⁹ z⁴G_5/2	⁵⁷La¹³⁹ y²D_3/2
Dye	R6G + CVP	R6G + CVP	Coumarin C495	Coumarin C495
Exciting wavelength (Å)	6578 ²D_3/2 → z²F_5/2	6651 ²D_3/2 → z²D_3/2	5570 ²D_3/2 → z⁴G_5/2	5501 ²D_3/2 → y²D_3/2
Observed wavelength (Å)	7068 z²F_5/2 → ²D_5/2	7152 z²D_3/2 → ²D_5/2	5918 z⁴G_5/2 → ²D_5/2	5840 y²D_3/2 → ²D_5/2
Measured lifetime (ns)	120 ± 6	165 ± 8	51 ± 4	18 ± 3
Previous measurement (ns)	98. ± 6			14.2 ± 0.9
Reference	9			8

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