p39_012 - of the central disk is R = αR = αP hc/λ = (0 ....

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12. The rate at which photons are emitted from the argon laser source is given by R = P/E ph ,wh e r e P =1 . 5 W is the power of the laser beam and E ph = hc/λ is the energy of each photon of wavelength λ .
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Unformatted text preview: of the central disk is R = αR = αP hc/λ = (0 . 84)(1 . 5 W) (6 . 63 × 10 − 34 J · s) (2 . 998 × 10 8 m / s) / (515 × 10 − 9 m) = 3 . 3 × 10 18 photons / s ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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