A stabilized He-Ne laser operates at a wavelength of λ=632.8 nm and has a bandwidth of Δν=1 kHz. The total power of the light beam is 1mW and the diameter of the beam is 1mm. A) Determine the irradiance of the laser and the number of photons emitted per unit of time B) What should be the temperature of a black body so that it emits the same number of photons, in the same area and in the same frequency range as the laser?
A stabilized He-Ne laser operates at a wavelength of λ=632.8 nm and has a bandwidth of Δν=1 kHz. The total power of the light beam is 1mW and the diameter of the beam is 1mm. A) Determine the irradiance of the laser and the number of photons emitted per unit of time B) What should be the temperature of a black body so that it emits the same number of photons, in the same area and in the same frequency range as the laser?
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A stabilized He-Ne laser operates at a wavelength of λ=632.8 nm and has a bandwidth of Δν=1 kHz. The total power of the light beam is 1mW and the diameter of the beam is 1mm.
A) Determine the irradiance of the laser and the number of photons emitted per unit of time
B) What should be the temperature of a black body so that it emits the same number of photons, in the same area and in the same frequency range as the laser?
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