A certain laser transition emits 6.0 x 1015 quanta per second per square meter of λ = 662.6 nm.What is the power output in joule per second per square meter?
Question
A certain laser transition emits 6.0 x 1015 quanta per second per square meter of λ = 662.6 nm.What is the power output in joule per second per square meter?
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Solution 1
To calculate the power output in joules per second per square meter, we first need to convert the wavelength from nanometers to meters.
1 nm = 1 x 10^-9 m
So, λ = 662.6 nm = 662.6 x 10^-9 m
Next, we use the formula for the energy of a photon, which is given by Planck's equation:
E = h * c / λ
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