Table 6 Resonance wavelength of optical transitions (absorption and emission) for Ho\(^{3+}\):YAG and Ho\(^{3+}\):WS\(_2\). The absorption transitions in Ho\(^{3+}\):WS\(_2\) are labeled according the optical spectrum shown in Fig. 7.

From: First-principles study of the electronic and optical properties of Ho\(_{\text{W}}\) impurities in single-layer tungsten disulfide

Ho\(^{3+}\) states

Ho\(^{3+}\):YAG

Ho\(^{3+}\):WS\(_2\)

\(^5\)I\(_{4}\rightarrow\) \(^5\)I\(_{5}\)

 

5.1 \(\upmu\)m (\(T_1\))

\(^5\)I\(_{5}\rightarrow\) \(^5\)I\(_{6}\)

 

3.75 \(\upmu\)m (\(T_2\)) or 3.70 \(\upmu\)m (\(T_3\))

\(^5\)I\(_{6}\rightarrow\) \(^5\)I\(_{7}\)

 

2.47 \(\upmu\)m (\(T_4\))

\(^5\)I\(_{7}\rightarrow\) \(^5\)I\(_{8}\)

1.978 \(\upmu\)m17 2.09 \(\upmu\)m16

2.12 \(\upmu\)m (\(T_5\)) or 1.78 \(\upmu\)m (\(T_6\))

\(^5\)I\(_{6}\rightarrow\) \(^5\)I\(_{8}\)

1.169 \(\upmu\)m17

1.19 \(\upmu\)m (\(T_7\)) or 1.10 \(\upmu\)m (\(T_8\))

\(^5\)I\(_{5}\rightarrow\) \(^5\)I\(_{8}\)

899 nm17

891 nm (\(T_9\))

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