13.7. The Gaussian beam of a HeNe laser ( 632.8 nm) is focused by a lens of focal length 0.35 m, ...
A collimated Gaussian light beam is focused to a spot by a lens. The diameter (2w) of the input beam is 100 microns. What is the diameter of the waist (2wo) of the focused spot if the wavelength of the light is 1550 nm and the focal length of the lens is 1.5 mm?
a collimated laser beam with a divergence of 4.1 milliradians is incident on a lens of focal length 250mm. Calculate the spot size of laser light at the focal point of the lens
A laser beam with wavelength 632.8 nm is incident on two narrow slits separated by 0.22 mm. Calculate how far apart the resultant interference fringes on a screen will be if it is located 2.3 m away from the slits?
4. A laser beam from a 1 mW He-Ne laser (632.8 nm) is directed onto a parallel film with an incident angle of 45°. Assume a beam diameter of 1 mm and a film index of 1.414. (See Figure below) Determine (a) The amplitude of the E-vector of the incident beam. (b) The angle of refraction of the laser beam into the film (c) The magnitudes of r' and tt', using the Stokes relations and a reflection coefficient, r 0.280....
P3.4. The spot size is clearly extremely important in determining the power density of a focused laser beam, an important determi- nant of how it may be used in surgery. However, there is a basic limitation on how small a spot one can achieve with a given wavelength laser beam, ; a given diameter laser beam (D); and a lens with focal length, f. This smallest spot sizc is given by: where d is the diameter of the focused laser...
ints) [Exam #27] laser beam with intensity 5 X 106 W/m? and wavelength 632.8 nm is aimed vertically upward. What is the maximum (in nm) of a spherical particle (density 5000 kg/m) that can be supported by the laser beam against gravity (g-9. Assume that the particle is totally absorbing. 255 510 170 1020 85 ts]
3- Consider a HeNe laser radiating at spatial TEM mode, wavelength à = 632 nm and spectral line-width AA = 0.1nm. Beam diameter at z, =0 is w, =1.0 mm. Laser resonator consists of two plane mirrors of separation L=1.0 m. a) What is the beam diameter at at 1Km. b) What is divergence angle of beam. c) What is the coherence length of this laser. d) What is the longitudinal frequency separation. (assume refractive index n=1 inside the cavity)...
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Consider a "collimated" beam, that is R(z 0)utted into a lens and focused onto a photodetector as shown in Figure P.2. Note: Do not assume that d f |a) (5 points) What is the complex Gaussian beam parameter, qi, just before the lens in terms of diameter of the lens, D, and 2? b) (10 points) What is the ABCD law matrix that relates qu to q2 at the photodetector? c) (10 points) Using ABCD law matrix from part...
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Physics 210 Review Problems for Final Lab I. Two converging lenses are separated by 5.00 cm. The left-hand lens has a focal length of 10.0 cm and the righ lens has a focal length of 15.0cm An object with a height of 1.00cm is place 300cm to the left of the left. hand lens. a. Find the location of the final image b. Find the lateral magnification c. Find the magnification assuming the object...
Note: This test contains ten questions from chapter 19 to chapter 27. For full credit, you should show all the steps of your numerical answers. No credit would be earned for just circling the right answers. Chapter 19 - Electric Potential and Electric Potential Energy 1. Two point charges are of + 7 uC and - 4 C are held at the corners of a rectangle as shown. The lengths of the sides of rectangle are 0.15 m, and 0.05...