Demonstration of the operation of an argon ion laser

Demonstration of the broad spectrum from an argon laser using an optical spectrum analyzer

Demonstration of single-frequency operation using an intracavity etalon

Demonstration of the effect of etalon tuning on the single-frequency output of the laser showing mode hopping phenomena

Demonstration of the effect of aligning the intracavity etalon normal to the laser beam showing chaotic amplitude and frequency behavior