Optical coherence and energy-level properties of a Tm3+ -doped LiNbO3 waveguide at subkelvin temperatures
| Autor: | Erhan Saglamyurek, Daniel Oblak, Charles W. Thiel, Neil Sinclair, Wolfgang Tittel, Rufus L. Cone |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
education.field_of_study Population Doping 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field Ion Crystal 0103 physical sciences Atomic physics 010306 general physics 0210 nano-technology education Hyperfine structure Excitation Energy (signal processing) |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | We characterize the optical coherence and energy-level properties of the 795-nm $^{3}\mathrm{H}_{6}$ to $^{3}\mathrm{H}_{4}$ transition of ${\mathrm{Tm}}^{3+}$ in a ${\mathrm{Ti}}^{4+}$:$\mathrm{Li}\mathrm{Nb}{\mathrm{O}}_{3}$ waveguide at temperatures as low as 0.65 K. Coherence properties are measured with varied temperature, magnetic field, optical excitation power and wavelength, and measurement timescale. We also investigate nuclear spin-induced hyperfine structure and population dynamics with varying magnetic field and laser excitation power. Except for accountable differences due to different ${\mathrm{Ti}}^{4+}$- and ${\mathrm{Tm}}^{3+}$-doping concentrations, we find that the properties of ${\mathrm{Tm}}^{3+}$:${\mathrm{Ti}}^{4+}$:$\mathrm{Li}\mathrm{Nb}{\mathrm{O}}_{3}$ produced by indiffusion doping are consistent with those of a bulk-doped ${\mathrm{Tm}}^{3+}$:$\mathrm{Li}\mathrm{Nb}{\mathrm{O}}_{3}$ crystal measured under similar conditions. Our results, which complement previous work in a narrower parameter space, support using rare-earth ions for integrated optical and quantum signal processing. |
| Databáze: | OpenAIRE |
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