Question

The 3s state of neon (see Figure ) is 16.6 eV above the ground state.

(a) Estimate the relative populations of the ground state and the 3s state at T = 293 K.

(b) Repeat for T =150 K.

(c) Repeat for T =600 K.

(d) What implications (if any) do your answers for parts (a)–(c) have for the operation of a He-Ne laser at various temperatures? The 3s state of neon (see Figure ) is 16.6 eV above the ground state. (a) Estimate the relative populations of the ground state and the 3s state at T = 293 K. (b) Repeat for T  150 K. (c) Repeat for T =600 K. (d) What implications (if any) do your answers for parts (a)–(c) have for the operation of a He-Ne laser at various temperatures?

Energy (eV)
20.61
Collisions > 20.66
Metastable state
Lasing transition
18.70
Figure 10.15 The energy levels
and transitions in a helium-neon
laser.
Helium
Neon
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Transcribed Image Text

Energy (eV) 20.61 Collisions > 20.66 Metastable state Lasing transition 18.70 Figure 10.15 The energy levels and transitions in a helium-neon laser. Helium Neon