In-Phase Coherently-Coupled Optically-Pumped VECSEL Array

Author

Sills, Alec C. ; West, Gavin N. ; Fennig, Eryn A. ; Grimshaw, Mike P. ; Johnson, Matthew Thomas ; Kanskar, M. ; Choquette, Kent D. ; Leisher, Paul O.

Author_Institution

Rose-Hulman Inst. of Technol., Terre Haute, IN, USA

Volume

26

Issue

5

fYear

2014

fDate

1-Mar-14

Firstpage

430

Lastpage

432

Abstract

We report on an optically pumped vertical-external-cavity surface-emitting laser array exhibiting coherent coupling. Imaging of the far field shows interference consistent with in-phase coherent coupling, and a majority of total power is present in the central on-axis lobe. The physical mechanism of operation is attributed to diffractive coupling, wherein a small portion of the light emitting from each emitter is shared with adjacent emitters of the array.

Keywords

laser cavity resonators; light interference; optical arrays; optical pumping; surface emitting lasers; central on-axis lobe; diffractive coupling; emitters; far field imaging; in-phase coherently-coupled optically-pumped VECSEL array; interference; vertical external cavity surface emitting laser array; Arrays; Laser beams; Laser excitation; Lenses; Pump lasers; Vertical cavity surface emitting lasers; Diode lasers; VECSEL arrays; coherent coupling;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2295003

Filename

6683040