Faria Junior, Paulo E. and Xu, Gaofeng and Lee, Jeongsu and Gerhardt, Nils C. and Sipahi, Guilherme M. and Zutic, Igor (2015) Toward high-frequency operation of spin lasers. PHYSICAL REVIEW B, 92 (7): 075311. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Injecting spin-polarized carriers into semiconductor lasers provides important opportunities to extend what is known about spintronic devices, as well as to overcome many limitations of conventional (spin-unpolarized) lasers. By developing a microscopic model of spin-dependent optical gain derived from an accurate electronic structure in a quantum-well-based laser, we study how its operation properties can be modified by spin-polarized carriers, carrier density, and resonant cavity design. We reveal that by applying a uniaxial strain, it is possible to attain a large birefringence. While such birefringence is viewed as detrimental in conventional lasers, it could enable fast polarization oscillations of the emitted light in spin lasers, which can be exploited for optical communication and high-performance interconnects. The resulting oscillation frequency (>200 GHz) would significantly exceed the frequency range possible in conventional lasers.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE-EMITTING LASERS; ROOM-TEMPERATURE; POLARIZATION DYNAMICS; SEMICONDUCTOR-LASERS; THRESHOLD REDUCTION; BAND-STRUCTURE; SPINTRONICS; INJECTION; VCSELS; BIREFRINGENCE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Jun 2019 08:34 |
| Last Modified: | 14 Jun 2019 08:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4998 |
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