Method for reducing amplitude noise in multi-wavelength modelocked semiconductor lasers
US6690686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2003 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Mar 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Multiwavelength modelocked laser systems and methods for reducing intensity fluctuations and amplitude noise in each of the wavelength channels as well as manipulating the interwavelength phase coherence properties. The systems and methods can include lens, semiconductor optical amplifier, grating, cylindrical lens, rod lens and an approximately 7 nm MQW saturable absorber between mirrors for providing a laser cavity resonator for hybridly modelocked operation. Additional systems and methods can include two different positions for the saturable absorber inside the laser resonator which enables direction of the interwavelength phase coherence properties. Up to approximately 300 MHz optical pulse trains in each of up to approximately three channels can be generated. Combining gain flattening and noise suppression within the optical cavity of the modelocked laser can result in generating up to approximately 123 wavelength channels, each having up to approximately 6 Giga Hertz optical pulse trains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.