A laser beam of diameter d1 = 1.1 mm is directed along the optical axis of a thin lens of focal length +6.5 cm (see figure below).
(a) How far from the lens will the beam be focused?
(b) 1. A second positive lens is placed to the right of the first. Light emerges from the second lens in a parallel beam of diameter d2 = 3.8 mm. Thus the combination of lenses acts as a beam expander. Find the focal length of the second lens.
2. Find the distance between the lenses.
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A laser beam of diameter d1 = 1.1 mm is directed along the
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5.50* Two positive lenses are to be used as a laserbeam expander. An axial 1.0-mm-diameter beam...
5.50* Two positive lenses are to be used as a laserbeam expander. An axial 1.0-mm-diameter beam enters a short focal length positive lens, which is followed by a somewhat longer focal length positive lens from which it emerges with a diameter of 8.0 mm. Given that the first lens has a 50.0 mm focal length, determine the focal length of the second lens and the separation between the lenses. Draw a diagram
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Chapter 34, Problem 111 Your answer is incorrect. Try again. The figure shows a beam expander...
Chapter 34, Problem 111 Your answer is incorrect. Try again. The figure shows a beam expander made with two coaxial converging lenses of focal lengths f and 2 and separation d-2. The device can expand a laser beam while keeping the light rays in the beam parallel to the central axis through the lenses. Suppose a uniform laser beam of width w; = 3.2 mm and intensity I, = 9.2 kW/m2 enters a beam expander for which f1 = 13.3...
1. A Galilean beam expander is really a Galilean telescope used in reverse (see notes page...
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5.50* Two positive lenses are to be used as a laserbeam expander. An axial 1.0-mm-diameter beam enters a short focal length positive lens, which is followed by a somewhat longer focal length positive lens from which it emerges with a diameter of 8.0 mm. Given that the first lens has a 50.0 mm focal length, determine the focal length of the second lens and the separation between the lenses. Draw a diagram
A collimated beam of laser light is incident on a set of three lenses in air. The first lens is diverging (fi<0) while the second and third lenses are converging (f2>0, f;>0). The first and second lenses are separated by a distance d12, while the second and third lenses are separated by a distance d23. The system is designed to take the collimated beam of laser light expand it (lens 1), recollimate it (lens 2), and then focus it to...
1) A laser produces a Gaussian beam with a waist immediately outside the laser, with a beam radius of 5 mm, an average power of 1 Watt, and a wavelength of 1 шт. We wish to choose a lens that will focus this beam as tightly as possible, subject to the constraint that the depth of focus must be at least 1 mm. a) What focal length lens should we choose? (Assume an ideal thin lens with no aberrations.) b)What...
Chapter 34, Problem 111 Your answer is incorrect. Try again. The figure shows a beam expander made with two coaxial converging lenses of focal lengths f and 2 and separation d-2. The device can expand a laser beam while keeping the light rays in the beam parallel to the central axis through the lenses. Suppose a uniform laser beam of width w; = 3.2 mm and intensity I, = 9.2 kW/m2 enters a beam expander for which f1 = 13.3...
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