Enhancing the 3-dB Bandwidth via the Gain-Lever Effect in Quantum-Dot Lasers
| Autor: | Yan Li, Nader A. Naderi, Vassilios Kovanis, Luke F. Lester |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Physics
lcsh:Applied optics. Photonics Lever business.product_category business.industry Bandwidth (signal processing) quantum dot lcsh:TA1501-1820 Rate equation Laser modulation bandwidth Atomic and Molecular Physics and Optics law.invention Semiconductor laser theory Optics law Quantum dot laser Quantum dot Optoelectronics lcsh:QC350-467 Electrical and Electronic Engineering business Tunable laser lcsh:Optics. Light Gain lever |
| Zdroj: | IEEE Photonics Journal, Vol 2, Iss 3, Pp 321-329 (2010) |
| ISSN: | 1943-0655 |
| Popis: | We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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