Analogue of electromagnetically induced absorption in the microwave domain using stimulated Brillouin scattering
| Autor: | Anjali B. Yelikar, A Siva Shakthi, Ravi Pant |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry Electromagnetically induced transparency General Physics and Astronomy Resonance lcsh:Astrophysics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 010309 optics Brillouin scattering lcsh:QB460-466 0103 physical sciences Dispersion (optics) Phase response Optoelectronics Photonics 0210 nano-technology business Absorption (electromagnetic radiation) lcsh:Physics Microwave |
| Zdroj: | Communications Physics, Vol 3, Iss 1, Pp 1-11 (2020) |
| ISSN: | 2399-3650 |
| DOI: | 10.1038/s42005-020-0367-6 |
| Popis: | Electromagnetically induced transparency/absorption (EIT/EIA) tailor the amplitude and phase response of an absorption resonance to create large dispersion, which has been exploited for applications in slow- and fast-light, and quantum information science. Since EIA enhances (induces) absorption of an already existing absorption (transmission) profile, it leads to a significant reduction in output signal power. Induction of a narrow absorption feature within a gain resonance can compensate for the signal loss while creating large dispersion at the EIA feature frequency. However, the demonstration of an analogue of EIA exploiting gain resonances has remained elusive. Here, we exploit coherent interaction between the Brillouin gain resonances in orthogonal polarization states to demonstrate controlled excitation of an analogue of EIA over microwave frequency range of 2.5–43 GHz. We induce a narrow absorption feature (~6 MHz), with controllable depth and frequency, within Brillouin gain resonance, demonstrating a novel technique for microwave photonic processing. Electromagnetically-induced absorption and transmission improve the performance of photonic systems by precisely tailoring their amplitude and phase response. Here, coherent interaction between Brillouin gain resonances is exploited to create and tune a narrow absorption feature within a gain resonance in the microwave domain. |
| Databáze: | OpenAIRE |
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