Optical feedback (OF) refers to the phenomenon in a laser, where a part of the coherent emission light returns to the laser cavity. The effect is typical for any laser, although the cause of the feedback light varies: reflection from optical components, fiber edges, spectroscopy cell windows.
Optical feedback (OF) refers to the phenomenon in a laser, where a part of the coherent emission light returns to the laser cavity. The effect is typical for any laser, although the cause of the feedback light varies: reflection from optical components, fiber edges, spectroscopy cell windows.
Source: Wikipedia "Optical feedback" · CC BY-SA 4.0
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