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High power compatible internally sensed optical phased array
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DOI：10.1364/OE.24.013467.png)
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摘要
En 中文
The technical embodiment of the Huygens-Fresnel principle, an optical phased array (OPA) is an arrangement of optical emitters with relative phases controlled to create a desired beam profile after propagation. One important application of an OPA is coherent beam combining (CBC), which can be used to create beams of higher power than is possible with a single laser source, especially for narrow linewidth sources. Here we present an all-fiber architecture that stabilizes the relative output phase by inferring the relative path length differences between lasers using the small fraction of light that is back-reflected into the fiber at the OPA's glass-air interface, without the need for any external sampling optics. This architecture is compatible with high power continuous wave laser sources (e.g., fiber amplifiers) up to 100 W per channel. The high-power compatible internally sensed OPA was implemented experimentally using commercial 15 W fiber amplifiers, demonstrating an output RMS phase stability of lambda/194, and the ability to steer the beam at up to 10 kHz. (C) 2016 Optical Society of America
Keyword:
ENHANCED HETERODYNE INTERFEROMETRY
BRILLOUIN-SCATTERING
FIBER AMPLIFIERS
LOCKING
MODULATION
KW
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期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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