Estimations of the electron-phonon coupling parameters of the spectral lines in GaAs: Er3+ and Y3Al5O12:Yb3+
| Autor: | Min Cheng, Xiao-Xuan Wu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Coupling
Materials science Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Thermal expansion Spectral line Electronic Optical and Magnetic Materials Ion 010309 optics Coupling parameter Position (vector) Lattice (order) 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology Order of magnitude |
| Zdroj: | Optik. 243:167423 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2021.167423 |
| Popis: | The temperature dependences (or shifts) of spectral lines 4I13/2→4I15/2 in GaAs: Er3+ and v5→v1 in Y3Al5O12:Yb3+ crystals are studied by using an approximate processing based on a full expression. This expression contains both the static effect owing to lattice thermal expansion and the dynamic effect coming from electron-phonon interaction. The static effect is evaluated from the pressure shift of spectral line position. The studies manifest that for both the pressure and temperature shifts of a spectral line, even if one shift is zero (e.g., the zero pressure shift in GaAs: Er3+ and zero temperature shift in Y3Al5O12:Yb3+), the electron-phonon coupling parameter (charactering the dynamic effect) can be obtained from another shift. The obtained magnitudes of electron-phonon coupling parameters for 4fn ions Er3+ in GaAs and Yb3+ in Y3Al5O12 in order of magnitude are close to those of other 4fn ions in crystals and hence are reasonable. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect