Effects of magnetic field orientation on optical decoherence in Er3+:Y2SiO5

被引:135
作者
Boettger, Thomas [1 ,2 ]
Thiel, C. W. [2 ]
Cone, R. L. [2 ]
Sun, Y. [2 ,3 ]
机构
[1] Univ San Francisco, Dept Phys & Astron, San Francisco, CA 94117 USA
[2] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA
[3] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA
关键词
erbium; excited states; g-factor; ground states; magnetic anisotropy; magnetic field effects; magnetic moments; photon echo; yttrium compounds; Zeeman effect; LASER FREQUENCY STABILIZATION; 1536; NM; SPECTRAL DIFFUSION; MEMORY; CODES; HOLES;
D O I
10.1103/PhysRevB.79.115104
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The influence of the anisotropic Zeeman effect on optical decoherence was studied for the 1.54 mu m telecom transition in Er3+:Y2SiO5 using photon echo spectroscopy as a function of applied magnetic field orientation and strength. The decoherence strongly correlates with the Zeeman energy splittings described by the ground- and excited-state g factor variations for all inequivalent Er3+ sites, with the observed decoherence times arising from the combined effects of the magnetic dipole-dipole coupling strength and the ground- and excited-state spin-flip rates, along with the natural lifetime of the upper level. The decoherence time was maximized along a preferred magnetic field orientation that minimized the effects of spectral diffusion and that enabled the measurement of an exceptionally narrow optical resonance in a solid-demonstrating a homogeneous linewidth as narrow as 73 Hz.
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页数:8
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