পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| Z-scan× | বিম প্রোপাগেশন মেথড (Beam Propagation Method)× | ফুরিয়ার অপটিক্স× | |
|---|---|---|---|
| ক্ষেত্র | আলোকবিজ্ঞান | আলোকবিজ্ঞান | আলোকবিজ্ঞান |
| পরিবার | Process / pipeline | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1990 | 1978 | 1822 |
| প্রবর্তক≠ | Mansoor Sheik-Bahae, David Hagan, and Eric Van Stryland | Michael Feit and John Fleck | Joseph Fourier and Ernst Abbe |
| ধরন≠ | Measurement technique | Paraxial propagation algorithm | Spectral decomposition method |
| মৌলিক উৎস≠ | 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. DOI ↗ | Feit, M. D., & Fleck, J. A. (1978). Light propagation in graded-index optical fibers. Applied Optics, 17(24), 3990-3998. DOI ↗ | Goodman, J. W. (1968). Introduction to Fourier Optics. McGraw-Hill. link ↗ |
| অপর নাম≠ | Z-scan method, nonlinear refraction measurement | BPM, paraxial approximation method | frequency-domain optics, wave optics, diffraction theory |
| সম্পর্কিত | 3 | 3 | 3 |
| সারসংক্ষেপ≠ | 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 Beam Propagation Method is a computational technique for simulating the propagation of optical beams through slowly varying, weakly guiding structures. Developed by Feit and Fleck in 1978, BPM exploits the paraxial approximation to reduce the full vector wave equation to a scalar or vector envelope equation, enabling efficient simulation of waveguides, integrated optics, and photonic devices. | Fourier optics is a mathematical framework that analyzes optical systems and phenomena using Fourier transforms and frequency-domain methods. Grounded in Joseph Fourier's 1822 work on heat diffusion and Ernst Abbe's microscopy theory, this approach decomposes optical fields into plane waves or spatial frequencies, revealing how optical systems manipulate and filter these components to produce images and transmit information. |
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