Ho Quang Quy, Mai Van Luu, Thai Doan Thanh, Bui Xuan Kien, Nguyen Manh Thang, Ho Dinh Quang
Appl Opt. 2020 Jul 1;59(19):5664-5669. doi: 10.1364/AO.391634.
In this paper, a thin film of oil red O coated by partial dielectric mirrors (PRFORO) operating as an optical bistable device is proposed. The equation of the output-input intensity relation considering nonlinear absorption inside PRFORO is derived and the optical bistability (OB) of PRFORO is shown. Additionally, the influence of the nonlinear refractive, absorptive coefficients of oil red O (ORO), reflective coefficient of mirrors, and the thickness of thin film on the OB is numerically investigated and discussed. As a result, the threshold switching power is lower than 19 mW; the minimum power of output up-state is larger than 40 µW for the optimal PRFORO designed with an ORO concentration larger than 0.1 mM; the thickness of the thin film is longer than 0.1 mm; and the reflective coefficient of mirrors is lower than 93%. The proposed model is suitable for all-optical switches, optical images, and signal processing.
本文提出了一种由部分介质镜镀膜的油红O薄膜（PRFORO）作为光学双稳器件。推导了考虑PRFORO内部非线性吸收的输出-输入强度关系方程，并展示了PRFORO的光学双稳性（OB）。此外，还对油红O（ORO）的非线性折射、吸收系数、镜子的反射系数以及薄膜厚度对光学双稳性的影响进行了数值研究和讨论。结果表明，对于设计的ORO浓度大于0.1 mM的最佳PRFORO，阈值开关功率低于19 mW；输出高态的最小功率大于40 μW；薄膜厚度大于0.1 mm；镜子的反射系数低于93%。所提出的模型适用于全光开关、光学图像和信号处理。
