We suggest and demonstrate the concept of optical programmable metamaterials which can configure the device’s electromagnetic parameters by the programmable optical stimuli. In such metamaterials, the optical stimuli produced by a FPGA controlled light emitting diode array can switch or combine the resonance modes which are coupled in. As an example, an optical programmable metamaterial terahertz absorber is proposed. Each cell of the absorber integrates four meta-rings (asymmetric 1/4 rings) with photo-resistors connecting the critical gaps. The principle and design of the metamaterials are illustrated and the simulation results demonstrate the functionalities for programming the metamaterial absorber to change its bandwidth and resonance frequency.
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Cheng Gong, Cheng Gong, Nan Zhang, Nan Zhang, Zijie Dai, Zijie Dai, Weiwei Liu, Weiwei Liu, "Optical programmable metamaterials", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106974M (20 February 2018); doi: 10.1117/12.2309751; https://doi.org/10.1117/12.2309751

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