By Min Gu
Optical microscopy and linked applied sciences complicated quick after the advent of the laser. The innovations have encouraged additional improvement of optical imaging idea, together with three-d microscopy imaging conception in spatial and frequency domain names, the idea of imaging with ultrashort-pulse beams and aberration concept for high-numerical-aperture goals. This ebook introduces those new theories when it comes to sleek optical microscopy. It comprises seven chapters together with an creation. The chapters are geared up to lessen cross-referencing. Comparisons with classical imaging concept are made while the recent imaging conception is brought. The e-book is meant for senior undergraduate scholars in classes on optoelectronics, optical engineering, photonics, biophotonics and utilized physics, when they have accomplished smooth optics or the same topic. it's also a reference for different scientists attracted to the field.
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Extra info for Advanced Optical Imaging Theory
5) is no longer of cylindrical symmetry. 16) where ¢>2 is a polar angle in the observation plane. Fig. 5 A serrated aperture with a maximum and minimum radii, a + & and a - &. N I 0 for N I 00 at r =a. = = The modulus squared of Eq. 16) gives rise to the intensity of the Fresnel diffraction pattern which is plotted in Fig. 6 for a serrated aperture shown in Fig. 5. As expected, some bright and dark spots can be seen when Z is small but in weaker contrast in comparison with Fig. 1 for a circular aperture.
1] on the surfaces of the lens. To study these two effects, we can express the transmittance of a lens as a complex function t(x. e. 1) where U,(x,, YJ) and U2(x2, Y2) are the light fields in the planes immediately before and behind the lens. respectively, as shown in Fig. 1. In particular. we can express t(x, y) as t(x, y) = P(x, y)exp[-ilj>(x, y)]. 2) Here P(x, y) and 1/>(x, y) are the two functions responsible for the amplitude and phase changes in the incident light, respectively. The function P(x, y) is sometimes called the pupil function of the lens and confined to the aperture of a lens.
R. Heckenberg, R. McDuff, C. P. Smith, H. Rubinsztein-Dunlop, and M. J. Wegener, Opt. and Quan. , 24 (1992) S951. 2], discussions on imaging performance of a lens are usually limited to thin objects because conventional optical microscopy provides a two-dimensional (2-D) image of a thin sample. 3] which allows one to perform three-dimensional (3-D) imaging of a sample with depth structures. 4]. All of these new developments require a better understanding of the performance of a lens along the axial direction.
Advanced Optical Imaging Theory by Min Gu