Refraction Defraction Reflection

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A laser beam with an angle of incidence of 39 degrees enters a slab with a refractive index of 1.45. The dimensions of the slab are 46mm in length and 3.4mm in width. The discussion focuses on calculating the number of internal reflections the beam undergoes before exiting the slab. Key calculations involve using Snell's law to determine the angles of refraction and the geometry of the slab to assess the path of the light. The final goal is to establish how many times the beam reflects internally before it emerges from the opposite side.
j3wfrobklyn
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A laser beam traveling in air strikes the mid-
point of one end of a slab of material with
index of refraction 1.45 as shown in the figure
below.

Dimensions of Block 46mm (L) and 3.4mm (W)
Initial ray of light enters the slab from the left side at an angle of incidence of 39 degrees.


Find the number of internal reflections of
the laser beam before it finally emerges from
the opposite end of the slab.
 
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You phrase that as if it were your homework question.
 


lol it is a homework question
 


j3wfrobklyn said:
lol it is a homework question

Well, we have a forum for that.
 
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