材料科学
算法
分析化学(期刊)
计算机科学
化学
色谱法
作者
Jason Midkiff,Kyo Sang Yoo,Jong‐Dug Shin,Hamed Dalir,Mohammad Hosain Teimourpour,Ray T. Chen
出处
期刊:Optica
[The Optical Society]
日期:2020-11-03
卷期号:7 (11): 1544-1544
被引量:41
标识
DOI:10.1364/optica.400441
摘要
Compact, lightweight, high-power beam-steering devices operating in the mid-infrared atmospheric window λ = 3 − 5 µ m are attractive for aerial-based applications such as long-range lidar and countermeasures. In the near-infrared spectral region, optical phased arrays (OPAs) have emerged as the dominant nonmechanical on-chip beam-steering technology, with a preponderance in silicon-based platforms. Extensions to the mid-infrared spectral region are scarce. Further, considering that the requirements for high performance in this region will likely demand monolithic integration with quantum cascade lasers, development of the photonic technology on a native III–V platform is advantageous. To this end, at λ = 4.6 µ m , on an InGaAs/InP platform, we experimentally demonstrate the operation of a 32-channel OPA with thermo-optic tuning for azimuthal (lateral) steering. With a waveguide spacing of 2.5 λ , we steer the beam to the maximum uninfringed field of view at ± 11.5 ∘ .
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