Lasers and Optical Engineering by P. Das (auth.) PDF
By P. Das (auth.)
A textbook on lasers and optical engineering may still contain all elements of lasers and optics; besides the fact that, it is a huge venture. the target of this ebook is to provide an creation to the topic on a degree such that less than graduate scholars (mostly juniors/seniors), from disciplines like electric engineering, physics, and optical engineering, can use the booklet. to accomplish this target, loads of easy heritage fabric, vital to the topic, has been coated in optics and laser physics. scholars with an user-friendly wisdom of freshman physics and without formal classes in electromagnetic idea could be in a position to persist with the publication, even if for a few sections, wisdom of electromagnetic thought, the Fourier remodel, and linear structures will be hugely invaluable. There are first-class books on optics, laser physics, and optical engineering. truly, such a lot of my wisdom was once obtained via those. in spite of the fact that, while i began educating an undergraduate path in 1974, lower than an analogous heading because the name of this e-book, I needed to use 4 books to hide the cloth i presumed an electric engineer wanted for his advent to the area of lasers and optical engineering. In my sabbatical 12 months, 1980-1981, i began writing category notes for my scholars, so they may well get during the path by way of in all likelihood paying for just one ebook. ultimately, those notes grew with assistance from my undergraduate and graduate scholars, and the ultimate result's this book.
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Extra resources for Lasers and Optical Engineering
This method can be called image formation, using the equivalent thin lens formulation. The method is based on the fact that any optical system in conjunction with two additional empty spaces can be shown to be an equivalent thin lens. Consider the optical system, which can be very complex, consisting of many thin and thick lenses having different materials with different refractive indices. 24 I. Geometrical Optics Still, the equivalent matrix for this complex system can be written as (M) = ll , (Mll M21 where M M 12 , M 21 , and M22 are arbitrary.
2) The last equality is obtained by noting that the determinant of the M matrix is 1. ~------z-------. System (M) • ,~ f-------z --~ ----1 Fig. 1. A telescopic system. 30 I. 5) An important quantity for the telescopic system is the longitudinal magnification. 6. Some Comments About the Matrix Method (1) Some of you have probably noticed that although any optical system is three dimensional, we have only been concerned with two-dimensional systems; or, we have only considered the plane containing the ray and the optical axis.
28) R(R) = (1 0) -p 1 ' where p = (-1) - 1 = 2 R R' or where feq = Image formation using ray tracing is also illustrated in Fig. 1. 32 I. Geometrical Optics r-----, I optical I I system I I I I I I I '- ____ J Fig. 2. Real and virtual objects and images. (3) The physical meaning oflateral magnification is obvious; however, the meaning of angular magnification may not be so. To clarify it, consider Fig. 2 which shows a bundle of rays with a solid angle, An 2 converging at the image point. These rays originated at the object point having a solid angle An, An 2 = An!
Lasers and Optical Engineering by P. Das (auth.)