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Laser Amplification Mechanism in an Nd 3+ -Doped Polymer Optical Fibre
| Content Provider | Scilit |
|---|---|
| Author | Yang, Guo Xing, Zheng Hai, Minng Qi-Jin, Zhang |
| Copyright Year | 2001 |
| Description | Journal: Chinese Physics Letters The Judd-Ofelt theory was applied to optical-absorption transitions in an $Nd^{3+}$-doped polymer optical fibre to obtain the intensity parameters $(Ω_{2}$ = 0.83 × $10^{-20}$ $cm^{2}$, $Ω_{4}$ = 1.64 × $10^{-20}$ $cm^{2}$, $Ω_{6}$ = 4.04 × $10^{-20}$ $cm^{2}$), the radiative lifetime (371 µs) and the quantum efficiency (0.73) of the$ $^{4}$G_{5/2}$ level, from which we found that the transition probability from$ $^{4}$G_{5/2}$ to$ $^{4}$I_{9/2}$ $(A_{ij}$ = 1995.7 $s^{-1}$) is higher than others. Thus, in the polymer system, the traditional four-level laser system for $Nd^{3+}$ was substituted by a three-level system. Furthermore, we have calculated the emission cross section (σ_{ij}$^{e}$ = $2.45×10^{-21}$ $cm^{2}$), and solved the differential equations of the single-pass gain. In comparison with inorganic optical fibres, an increased saturated intensity is observed. |
| Related Links | http://iopscience.iop.org/article/10.1088/0256-307X/18/10/312/pdf |
| Ending Page | 1340 |
| Page Count | 4 |
| Starting Page | 1337 |
| ISSN | 0256307X |
| e-ISSN | 17413540 |
| DOI | 10.1088/0256-307x/18/10/312 |
| Journal | Chinese Physics Letters |
| Issue Number | 10 |
| Volume Number | 18 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2001-09-19 |
| Access Restriction | Open |
| Subject Keyword | Journal: Chinese Physics Letters Quantum Science and Technology Doped Polymer Optical Polymer Optical Fibre Quantum Efficiency Transition Probability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
