So sánh phương pháp

	Kỹ thuật Z-scan	Finite-Difference Time-Domain
Lĩnh vực	Quang học	Quang học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1990	1966
Người khởi xướng	Mansoor Sheik-Bahae, David Hagan, and Eric Van Stryland	Kane Yee
Loại	Measurement technique	Finite-difference algorithm
Công trình gốc	Sheik-Bahae, M., Said, A. A., Wei, T. H., Hagan, D. J., & Van Stryland, E. W. (1990). Sensitive measurement of optical nonlinearities using a single beam. IEEE Journal of Quantum Electronics, 26(4), 760-769.	Yee, K. S. (1966). Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media. IEEE Transactions on Antennas and Propagation, 14(3), 302-307.
Tên gọi khác	Z-scan method, nonlinear refraction measurement	FDTD, Yee scheme
Liên quan	3	3
Tóm tắt	The Z-scan technique is an experimental method for measuring nonlinear optical properties of materials, particularly third-order susceptibility and nonlinear absorption. Developed by Sheik-Bahae, Hagan, and Van Stryland in 1990, Z-scan uses a tightly focused laser beam and moves the sample along the beam propagation axis (z-axis), recording transmission variation to deduce nonlinear refraction and absorption coefficients with high sensitivity.	The Finite-Difference Time-Domain method is a computational technique for solving Maxwell's equations by discretizing space and time on a grid. Introduced by Kane Yee in 1966, FDTD is a foundational approach in computational electrodynamics and optical simulation, enabling direct modeling of electromagnetic wave propagation through complex media.