In-phase Supermode Operation in Ring Coherent VCSEL Arrays with a Fractional Talbot Cavity

In-phase coherent vertical cavity surface emitting laser (VCSEL) arrays have desirable properties for highbrightness laser applications. We employ mutual injection feedback modeling of ring VCSEL arrays with fractional Talbot cavity to select their supermodes. An analysis of the effects of Talbot ca...

Full description

Saved in:
Bibliographic Details
Published inJournal of lightwave technology pp. 1 - 7
Main Authors Li, Wei, Dai, Jing Jing, Li, Sheng Nan, Jin, Dong Yue, Wang, Zhi Yong
Format Journal Article
LanguageEnglish
Published IEEE 27.06.2024
Subjects
Coherent array
Couplings
fractional Talbot cavity
in-phase mode
Laser radar
Optical arrays
Optical sensors
Phased arrays
Semiconductor laser arrays
Vertical cavity surface emitting lasers
vertical-cavity surface-emitting laser (VCSEL)
Online AccessGet full text

Cover

More Information
Summary:In-phase coherent vertical cavity surface emitting laser (VCSEL) arrays have desirable properties for highbrightness laser applications. We employ mutual injection feedback modeling of ring VCSEL arrays with fractional Talbot cavity to select their supermodes. An analysis of the effects of Talbot cavity lengths on engineering the coupling coefficient and gain threshold for in-phase mode operation is provided through the overlapping integrals of optical field distributions. An example design for 24-element arrays with a fractional Talbot cavity is presented, and the in-phase far-field distribution is obtained. This provides a potential method for fabricating Bessel Gaussian beams using larger ring VCSEL arrays.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2024.3420795