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  3. a small he-ne laser produces a 632.8 nm beam with

A small He-Ne laser produces a 632.8 nm beam with an average power of 3.5 mW...

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Physics

A small He-Ne laser produces a 632.8 nm beam with an averagepower of 3.5 mW and diameter of 2.4mm

a) How many photons per second are emitted by the laser?
b) What is the amplitude of the electric field inside the beam?(Hint: You should consult your EP book, the internet, or equation3.10 for this problem)
c) How does this electric field compare with one produced by a 100Wlight bulb at a distance of 1 meter?

Answer & Explanation Solved by verified expert
3.6 Ratings (546 Votes)
aEnergy of each photon where is thewavelengthE 414 x 10156328 x 109 6542 x 109 J 6542nJPower energy per unit time secondNumber of photons emitted per second powerEnergy per photon 35 mW6542 nJ 535004585 photonssecondbThe total area    See Answer
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