Transcription of Helium-Neon Laser
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Helium-Neon Laser
Helium-Neon Laser1 IntroductionThe Helium-Neon Laser , short HeNe- Laser , is one of the most common used Laser for allignement,reference Laser and optics demonstrations. Its most used wavelength is at (red). It alsohas lasing transition in IR, orange and green. This experiment will make you familiar with basiccavity alignement procedures, cavity characteristics, beam profile analysis and Gaussian Helium-Neon Gain MediumThe Gain medium is a mixture of the two gases helium and Neon. Mostly the mixture rangesfrom 5:1 to 20:1 ratios with relativly low pressure.
the Helium-Neon Laser is largely due to doppler broadening. Another key feature of the Helium Neon laser is that it is a resonant cavity wherein you can have perhaps a 1,000,000 half-wavelengths ( 1) t inside it. If 1,000,001 half-wavelengths t inside the same cavity this would obviously correspond to a slightly shorter wavelength (
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