Beam steering via resonance detuning in coherently coupled vertical cavity laser arrays

Journal Article · Mon Nov 11 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4830432· OSTI ID:22254052

Siriani, Dominic F.; Peun Tan, Meng; Choquette, Kent D. ^[1]

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1. Department of Electrical and Computer Engineering University of Illinois, Urbana, Illinois 61820 (United States)

Coherently coupled vertical-cavity surface-emitting laser arrays offer unique advantages for nonmechanical beam steering applications. We have applied dynamic coupled mode theory to show that the observed temporal phase shift between vertical-cavity surface-emitting array elements is caused by the detuning of their resonant wavelengths. Hence, a complete theoretical connection between the differential current injection into array elements and the beam steering direction has been established. It is found to be a fundamentally unique beam-steering mechanism with distinct advantages in efficiency, compactness, speed, and phase-sensitivity to current.

• OSTI ID: 22254052
• Journal Information: Applied Physics Letters, Vol. 103, Issue 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BEAMS
CURRENTS
LASERS
PHASE SHIFT
SENSITIVITY
SURFACES
WAVELENGTHS