e894a4i - = U O(d U P = U O 3 A hologram is created of thin...

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ESNC 460/894 Assignment 4: Mar. 23 due Mar. 30, 2006 1. Prove whether the following mirror configurations are stable or not. Plot them on a g stability diagram. (a) L = 2.0 m, r 1 = r 2 = 2 m (b) L = 1.5 m, r 1 = r 2 = 0.75 m (c) L = 5.0 m, r 1 = 30 m, r 2 = 20 m (d) L = 1.0 m, r 1 = 4 m, r 2 = -2 m (e) L = 1.5 m, r 1 = 3 m, r 2 = -2 m (f) L = 3.0 m, r 1 = 2 m, r 2 = 2.5 m 2. The system geometries used to record transmission and reflection holograms are illustrated in the figure below. The reference beam U R is collimated and object beam U 0 originates from a point source. By using the hologram equations in the notes and drawing sketches, describe the results when the transmission and reflection holograms are constructed with: (a) U P = U R (b) U P = U R * (c) U P
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Unformatted text preview: = U O (d) U P = U O * 3. A hologram is created of thin object located 2 cm from the film plate. The hologram is then placed in a lens system 10 cm from a f=10 cm lens. When the hologram is illuminated what type image will be created by the lens and where will it be located? 4 (a) Using energy equations what is the surface temperature versus time for a 100 watt argon laser with a 0.5 mm 1/e 2 laser spot, at the center of the spot when hitting a silicon surface for a pulse of duration 10-5 sec. Give the diffusion depth at the end of the pulse. (b) Repeat (a) but with the material surface being aluminium. (c) Add to the plots the temperature vs time curve for half and one diffusion depth....
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