The second-harmonic generation in a dissipative and dispersion layered structure
| Autor: | Jamshid Soltanmohammadi, Hossein Masalehdan, E. Lotfi, Afshin Arghand-Hesar, Kazem Jamshidi-Ghaleh |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Energy conversion efficiency Phase (waves) Second-harmonic generation Condensed Matter Physics Electronic Optical and Magnetic Materials Coherence length Computational physics Nonlinear system Cascade Dispersion (optics) Statistical physics Absorption (electromagnetic radiation) Instrumentation |
| Zdroj: | The European Physical Journal Applied Physics. 72:10501 |
| ISSN: | 1286-0050 1286-0042 |
| DOI: | 10.1051/epjap/2015150126 |
| Popis: | Conversion efficiency of second-harmonic generation (SHG) in a multicrystal structure arrangement, under linearly absorption of interacting waves was analytically investigated. Different linear absorption and nonlinear interaction coefficients were considered for both of the fundamental and the second harmonic waves in cascade layers. The intensity-constant approximation on fundamental wave radiation was applied in calculations. Behavior of conversion efficiency with interaction coherence length of fundamental wave, phase miss-matching and ratio of linear absorption coefficients were graphically illustrated. The results are shown that in multicrystal structure scheme, the conversion efficiency can be tuned by the interaction coherent length and it is possible to compensate the phase differences induced in the previous layers. The phase compensation between the layers is the physical reason of efficiency improvement. |
| Databáze: | OpenAIRE |
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