In the He-Ne Laser, the Lasing Transition Goes from the Metastable

question 5

Multiple Choice

In the He-Ne laser, the lasing transition goes from the metastable 20.66 eV state in Ne to a lower-energy state. The wavelength of the laser photons is 633.0 nm. What is the energy of the lower state of the lasing transition?

• A) 0
• B) 4.660 eV
• C) 13.61 eV
• D) 18.70 eV
• E) 20.61 eV

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