Electron-Population Bragg Grating Induced in an AlxGa1 –xAs–GaAs–AlxGa1 –xAs Heterostructure by Intrinsic Stimulated Picosecond Emission
| Autor: | D. N. Zabegaev, I. L. Bronevoi, N. N. Ageeva, A. N. Krivonosov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Population Physics::Optics 02 engineering and technology Grating 01 natural sciences Waveguide (optics) law.invention Optical pumping Condensed Matter::Materials Science Fiber Bragg grating law 0103 physical sciences education 010302 applied physics education.field_of_study business.industry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Condensed Matter Physics Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Semiconductor Picosecond Optoelectronics 0210 nano-technology business |
| Zdroj: | Semiconductors. 54:1205-1214 |
| ISSN: | 1090-6479 1063-7826 |
| DOI: | 10.1134/s1063782620100024 |
| Popis: | It is shown that modulation of the spectrum of stimulated picosecond emission generated in an AlxGa1 – xAs–GaAs–AlxGa1 – xAs waveguide heterostructure upon the optical pumping of GaAs, as well as a number of previous experimental results, can be explained under the assumption that the emission forms a symmetric modification of the Bragg grating of the nonequilibrium electron population in GaAs. The boundary conditions determining the grating design are proposed. To satisfy them, the grating can change only discretely. The latter is consistent with a change in the modulation of the spectrum of light absorption in GaAs, which reflects the emission-stimulated modulation of the population depletion. Inducing the grating, i.e., spatial hole burning, is one of the reasons for the multimode character of the emission, competition and switching of its modes, and modulation of the gain spectrum (frequency hole burning). The same is possible in a semiconductor laser, as in a waveguide. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |