Temperature-dependent mechanical losses of Eu$^{3+}$:Y$_{2}$SiO$_{5}$
for spectral hole burning laser stabilization
Temperature-dependent mechanical losses of Eu$^{3+}$:Y$_{2}$SiO$_{5}$
for spectral hole burning laser stabilization
We investigate the mechanical loss characteristics of Eu$^{3+}$:Y$_2$SiO$_5$$\unicode{x2013}$a promising candidate for ultra-low-noise frequency stabilization through the spectral hole burning technique. Three different mechanical oscillators with varying surface-to-volume ratios and crystal orientations are evaluated. In this context, we perform mechanical ringdown and spectral measurements spanning temperatures from room temperature down to …