<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["en", "en"].<end_of_turn>
<start_of_turn>user
Why does a three-level laser, as compared to a four-level laser, require much higher
threshold power to maintain population inversion?<end_of_turn>
<start_of_turn>model
This is so because in a three-level laser, the lower lasing level is the ground state level.<end_of_turn><eos>