High-speed beam steering with phased vertical cavity laser arrays

Matthew T. Johnson; Dominic F. Siriani; Meng Peun Tan; Kent D. Choquette

doi:10.1109/JSTQE.2013.2244574

High-speed beam steering with phased vertical cavity laser arrays

Matthew T. Johnson, Dominic F. Siriani, Meng Peun Tan, Kent D. Choquette

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate electronic beam steering using pha-sed vertical cavity laser arrays at record high speed (1.4·108 deg/s) and sensitivity to current (1.2 deg/100 μA). The relative phase and coherence between the array elements are extracted with a Fraunhoffer propagation method. The spatially resolved spectrum and beam steering dynamics are also analyzed. The thermo-optic effect is found to dominate the phase-shifting mechanism at lower speed steering, while the electronic variation in index dominates at higher speeds (≥10 MHz).

Original language	English (US)
Article number	6425397
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	19
Issue number	4
DOIs	https://doi.org/10.1109/JSTQE.2013.2244574
State	Published - 2013

Keywords

Beam steering
phased arrays
semiconductor laser arrays
semiconductor lasers

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Online availability

10.1109/JSTQE.2013.2244574

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title = "High-speed beam steering with phased vertical cavity laser arrays",

abstract = "We demonstrate electronic beam steering using pha-sed vertical cavity laser arrays at record high speed (1.4·108 deg/s) and sensitivity to current (1.2 deg/100 μA). The relative phase and coherence between the array elements are extracted with a Fraunhoffer propagation method. The spatially resolved spectrum and beam steering dynamics are also analyzed. The thermo-optic effect is found to dominate the phase-shifting mechanism at lower speed steering, while the electronic variation in index dominates at higher speeds (≥10 MHz).",

keywords = "Beam steering, phased arrays, semiconductor laser arrays, semiconductor lasers",

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AU - Siriani, Dominic F.

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AU - Choquette, Kent D.

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AB - We demonstrate electronic beam steering using pha-sed vertical cavity laser arrays at record high speed (1.4·108 deg/s) and sensitivity to current (1.2 deg/100 μA). The relative phase and coherence between the array elements are extracted with a Fraunhoffer propagation method. The spatially resolved spectrum and beam steering dynamics are also analyzed. The thermo-optic effect is found to dominate the phase-shifting mechanism at lower speed steering, while the electronic variation in index dominates at higher speeds (≥10 MHz).

KW - Beam steering

KW - phased arrays

KW - semiconductor laser arrays

KW - semiconductor lasers

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High-speed beam steering with phased vertical cavity laser arrays

Abstract

Keywords

ASJC Scopus subject areas

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