Calculate the transit-time broadening for hydrogen atoms traversing a 1-mm diameter laser beam. For the speed of the hydrogen atoms use the rms speed (v = (3kT/m)1/2) at room temperature (20°C).
Calculate the transit-time broadening for hydrogen atoms traversing a 1-mm diameter laser beam. For the speed...
A laser emits a cylindrical beam of light 2.6 mm in diameter. If the average power of the laser is 2.6 mW , what is the rms value of the electric field in the laser beam? (Units for the answer is kV/m)
A 18.3-mW laser puts out a narrow beam 2.15 mm in diameter. Suppose that the beam is in free space. 1. what is the rms value of E in the beam? 2. What is the rms value of B in the beam?
A laser emits a cylindrical beam of light 2.0 mm in diameter. Part A If the average power of the laser is 2.2 mW , what is the rms value of the electric field in the laser beam? Express your answer using two significant figures. Erms = kV/m
A laser emits a cylindrical beam of light 2.9 mm in diameter. Part A If the average power of the laser is 2.4 mW , what is the rms value of the electric field in the laser beam? Express your answer using two significant figures. Erms = kV/m
A laser emits a narrow beam of light. The diameter of the beam is 3 mm, and the power is 10 mW. What is the intensity of the laser beam? The answer is 1400 W/m^2. Please show step by step how to get the answe to this problem showing formulas.
3. A micro lens focuses on a laser beam of diameter D = 1 mm to a tiny spot of radius wF. The wavelength of the laser beam is 800 nm and f of the micro lens is 1.25 mm. Find wf. Assume the laser beam fills the micro lens. a) 637 nm b)1274 nm c)637 microns d) 1274 microns e) none of these
A 0.60 mW laser produces a beam of light with a diameter of 2.0 mm . 1.What is the average intensity of this beam? Iav = ___kW/m2 2.At what distance does a 160 W lightbulb have the same average intensity as that found for the laser beam in part (a)? (Assume that 5.0% of the bulb's power is converted to light.) r=___cm
A He-Ne laser beam has power 1 mW and beam diameter 1 mm. Determine the electric field amplitude in the light wave, assuming that the light intensity is uniform across the beam profile.
What is the total energy transported per hour along a narrow cylindrical laser beam 2.00 mm in diameter, whose E-field has an rms strength of 3.90 × 10 − 2 N/C ?
You've recently read about a chemical laser that generates a 20-cm-diameter, 27.0 MW laser beam. One day, after physics class, you start to wonder if you could use the radiation pressure from this laser beam to launch small payloads into orbit. To see if this might be feasible, you do a quick calculation of the acceleration of a 20-cm-diameter, 92.0 kg,perfectly absorbing block. What speed would such a block have if pushed horizontally 110 m along a frictionless track by...