Laser diode for controlling spatial hole burning and optical pulse generating method
US8837537B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1221
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high-efficiency laser diode is provided. Since a λ/4 phase-shifted distributed feedback (DFB) laser diode has a great coupling coefficient, mode stability is poor due to spatial hole burning when multiplication of the coupling coefficient by length of a resonator is equal to or greater than 2. In the inventive concept, a region capable of controlling spatial hole burning is inserted into a semiconductor laser diode structure. Thus, an ultrahigh-speed pulse laser diode having a repetition rate in the band ranging from 100 GHz to 300 GHz is obtained. In addition, a single-mode laser diode with improved energy use efficiency is implemented by changing the configuration of a laser diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.