Stationary and coherent spectroscopy of 167Er3+ in waveguides in 7LiYF4 crystal
Kazan Quantum Center, Kazan National Research Technical University n.a. A.N. Tupolev-KAI,18a Chetaeva Str., Kazan, 420126 Russia
2 M.V. Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory, Moscow, 119991 Russia
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Published online: 31 October 2017
We have conducted a spectroscopic investigation of 167Er3+ ions in optical waveguides on an optical transition between the hyperfine sublevels of 4I15/2 and 4I9/2 multiplets. Waveguides with diameters ranging from 20 to 100 µm were produced in the crystal by a femtosecond laser using the depressed-cladding approach. The spectroscopy results of 167Er3+ ions inside the waveguides show additional broadening and an overall shifts of the spectra compared to the bulk spectrum of ions. The sign of the observed frequency shift depends on the diameter of the specific waveguide. We have also observed a two-pulse photon echo in several waveguides. The acquired results show the possibility for integrated quantum schemes in rare-earth ions doped crystals.
© The Authors, published by EDP Sciences, 2017
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