Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2295003
