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Terahertz Physics by R. A. Lewis

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8     OPTICS

This chapter is largely descriptive. It only makes use of rather simple mathematics: algebra and trigonometry (including the exponential function).

The last chapter was about sources of terahertz radiation. The next chapter will be about sensors of terahertz radiation. In this chapter we will look at what happens between the source and the sensor. We will look at how terahertz radiation is manipulated: bent, focussed, collimated. We will use optics as a general term for manipulating light and optical elements as a general term for specific devices that manipulate light.

Following the progression of an electromagnetic field through a collection of optical elements can be carried out at various levels of sophistication.

1. Geometrical ...

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