Which of the following can be used to produce population inversion for the emission of a Laser?
Correct answer: A. Optical pumping
- A. Optical pumping
- B. Optical fibre
- C. Optical instrument
- D. Optical polarization
Explanation
Optical pumping is the process of photon emission at an element, since amplification of photons is needed to produce a laser, photon pumping is done to cause excitation of electrons to help with it.
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Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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