期刊
OPTICS EXPRESS
卷 30, 期 14, 页码 24788-24803出版社
Optica Publishing Group
DOI: 10.1364/OE.460083
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资金
- Engineering and Physical Sciences Research Council [EP/M015726/1, EP/M016218/1, EP/M017923/1, EP/R004803/1, EP/T00326X/1]
- European Space Agency [4000125232/18/NL/AR/zk]
Dynamic time-resolved measurements of a multi-pixel analog liquid crystal phase modulator driven at a 1 kHz frame rate are presented. Using a heterodyne interferometer, two pixels can be interrogated independently and simultaneously, allowing for deconvolution of phase modulation with a wide bandwidth. The root mean squared optical phase error within a 30 Hz to 25 kHz bandwidth is <0.5 degrees and the crosstalk rejection is 50 dB. This technique is applicable to various types of optical phase modulators and spatial light modulators.
We present dynamic time-resolved measurements of a multi-pixel analog liquid crystal phase modulator driven at a 1 kHz frame rate. A heterodyne interferometer is used to interrogate two pixels independently and simultaneously, to deconvolve phase modulation with a wide bandwidth. The root mean squared optical phase error within a 30 Hz to 25 kHz bandwidth is <0.5 degrees and the crosstalk rejection is 50 dB. Measurements are shown for a custom-built device with a flexoelectro-optic chiral nematic liquid crystal. However, the technique is applicable to many different types of optical phase modulators and spatial light modulators. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License.
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