Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3693168
Keywords
chirp modulation; electron spin polarisation; frequency modulation; optical modulation; refractive index; semiconductor lasers
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Funding
- NSF-ECCS
- AFOSR-DCT
- U.S. ONR
- NSF-NRI NEB [2020]
- SRC
- Direct For Mathematical & Physical Scien [1124601] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1102092] Funding Source: National Science Foundation
- Division Of Materials Research [1124601] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [GRANTS:14031948] Funding Source: National Science Foundation
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The usefulness of semiconductor lasers is often limited by the undesired frequency modulation, or chirp, a direct consequence of the intensity modulation, and carrier dependence of the refractive index in the gain medium. In spin-lasers, realized by injecting, optically or electrically, spin-polarized carriers, we elucidate paths to tailoring chirp. We provide a generalized expression for chirp in spin-lasers and introduce modulation schemes that could simultaneously eliminate chirp and enhance the bandwidth, as compared to the conventional (spin-unpolarized) lasers. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693168]
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