Pb-6 The linewidth of a He-Ne laser (λ=632.8 nm) is one fifth of the Doppler linewidth. The temperature of the discharge is about 400 K. Assume that the power inside the cavity is 200 mW and that the cavity mode has a constant diameter of 1 mm, and a uniform intensity. Calculate the temperature of a blackbody, whose energy density at 632.8 nm is equal to the energy density of the em wave inside the laser cavity. The atomic mass of neon is 20.18.
Pb-6 The linewidth of a He-Ne laser (λ=632.8 nm) is one fifth of the Doppler linewidth. The temperature of the discharge is about 400 K. Assume that the power inside the cavity is 200 mW and that the cavity mode has a constant diameter of 1 mm, and a uniform intensity. Calculate the temperature of a blackbody, whose energy density at 632.8 nm is equal to the energy density of the em wave inside the laser cavity. The atomic mass of neon is 20.18.
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Transcribed Image Text:Pb-6
The linewidth of a He-Ne laser (λ=632.8 nm) is one fifth of the Doppler
linewidth. The temperature of the discharge is about 400 K. Assume that the
power inside the cavity is 200 mW and that the cavity mode has a constant
diameter of 1 mm, and a uniform intensity. Calculate the temperature of a
blackbody, whose energy density at 632.8 nm is equal to the energy density of
the em wave inside the laser cavity. The atomic mass of neon is 20.18.
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