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L1-31: LASER LIGHT CAVITY 9 years 11 months ago #734

  • zzfixk21
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ID Code: L1-31
Purpose: To demonstrate how a laser cavity works.
Description: The laser beam enters the cavity through a hole in the mirror nearest the laser. The mounts are then adjusted to reflect the laser beam back and forth between the two mirrors. Using curved mirrors with long focal length the beam is seen to walk around the mirrors in an elliptical path. Use vapor from blowing across liquid nitrogen or a very small amount of chalk dust to make the beam visible.
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Last edit: by zzfixk21.
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