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2 cards from this section. Quick, good the night before a test.
What is population inversion in the context of lasers?
Think of the state of atoms in a laser medium.
What type of laser uses carbon dioxide as a gain medium?
It is widely used for cutting and welding applications.
What effect does population inversion have on lasing?
Think about the conditions necessary for a laser to operate.
Is Brewster's angle relevant for maximizing laser transmission?
Consider the purpose of Brewster’s angle in optics.
Consider a laser that operates with a population inversion of 1000 atoms. If 10% are flipped to the excited state, how many atoms remain in the ground state?
Calculate based on the total number of atoms.
A laser emits 5 × 10^6 photons per second, each with an energy of 1.5 eV. What is the total power output?
Convert eV to watts if needed.
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