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Reconfigurable Optical Boolean Function Generator Based on Electro-Optical Nonlinear Dynamics
摘要： We propose an optical Boolean function generator based on an electro-optical nonlinear feedback loop. Theoretically, all possible Boolean functions with optical input and output can be implemented by passing through enough iterations. By changing the control signal, the optical circuit can be con?gured to any desired Boolean function without adjusting the physical setup. Optical components with high bandwidth can improve the computing speed markedly. The impact of noise on the system is considered in detail. The results show that a substantial number of reliable Boolean functions can be obtained in the presence of noise contamination. Compared with traditional optical digital computation systems, the proposed scheme exhibits a huge advantage in multifunctional computing and ?exible con?guration.
关键词： optical Boolean function generator,noise contamination,electro-optical nonlinear feedback loop,high bandwidth,multifunctional computing
更新于2025-09-19 17:13:59
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Formation of the Feedback Loop for Phase Control of a Fiber Laser Array
摘要： Methods for phasing radiation channels for the coherent combination of linearly polarized fields of narrowband fiber lasers are considered. High efficiency of operation of the internal feedback loop based on interference of peripheral sections of radiation (Gaussian beam tails) of the phased channels is shown. This method is easily implementable. It allows scaling the power of optical phased arrays and does not require heavy optical elements. Equations for calculation of the optical scheme for implementation of the feedback loop are presented along with the experimental results on coherent combination of three beams.
关键词： optical phased arrays,feedback loop,coherent combining,fiber laser
更新于2025-09-19 17:13:59
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Laser Intensity Noise Suppression for Preparing Audio-Frequency Squeezed Vacuum State of Light
摘要： Laser intensity noise suppression has essential effects on preparation and characterization of the audio-frequency squeezed vacuum state of light based on a sub-threshold optical parametric oscillator (OPO). We have implemented two feedback loops by using relevant acousto-optical modulators (AOM) to stabilize the intensity of 795-nm near infrared (NIR) fundamental laser and 397.5-nm ultraviolet (UV) laser generated by cavity-enhanced frequency doubling. Typical peak-to-peak laser intensity fluctuation with a bandwidth of ~10 kHz in a half hour has been improved from ±7.45% to ±0.06% for 795-nm NIR laser beam, and from ±9.04% to ±0.05% for 397.5-nm UV laser beam, respectively. The squeezing level of the squeezed vacuum state at 795 nm prepared by the sub-threshold OPO with a PPKTP crystal has been improved from ?3.3 to ?4.0 dB around 3~9 kHz of analysis frequency range.
关键词： audio frequency,acousto-optical modulator (AOM),laser intensity noise,feedback loop,squeezed vacuum state of light
更新于2025-09-16 10:30:52