### Abstract

Laterally coupled laser-diode pairs, also called "twin stripe lasers", are coupled by means of the evanescent em-field in between two dielectric laser cavities. The coupling strength between the two lasers is determined by the decay length of this evanescent em-field. This length depends on the indices of refraction of the material which separates the two cavities compared to the cavity material. However the index of refraction of the cavity material also depends on the inversion density in the lasing material. Therefore the coupling coefficient in the rate equation for the twin stripe device can be written as ¿0[1 + 1/2(ac(1) ¿1 + ac(2) ¿2)], where ¿1 and ¿2 are the inversion densities in the two stripes. We give an expression for ac>(i) in terms of the properties of the device.

Original language | English |
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Title of host publication | Semiconducter lasers and laser dynamics, Strasbourg France |

Editors | D. Lenstra, G. Morthier, T. Erneux, M. Pessa |

Place of Publication | Bellingham |

Publisher | SPIE |

Pages | 613-624 |

DOIs | |

Publication status | Published - 2004 |

Event | conference; Semiconducter lasers and laser dynamics - Duration: 1 Jan 2004 → … |

### Publication series

Name | Proceedings of SPIE |
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Volume | 5452 |

ISSN (Print) | 0277-786X |

### Conference

Conference | conference; Semiconducter lasers and laser dynamics |
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Period | 1/01/04 → … |

Other | Semiconducter lasers and laser dynamics |

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## Cite this

Jagher, de, P. C., & Lenstra, D. (2004). The twin-stripe laser: a non-linear term in the coupling coefficient. In D. Lenstra, G. Morthier, T. Erneux, & M. Pessa (Eds.),

*Semiconducter lasers and laser dynamics, Strasbourg France*(pp. 613-624). (Proceedings of SPIE; Vol. 5452). SPIE. https://doi.org/10.1117/12.545302