Wavelength-of-he-ne-laser, a helium–neon laser or he-ne laser, is a type of gas laser whose gain medium consists of a mixture of 90% helium and 10% neon at a total pressure of about 1 torr inside of a small electrical discharge. the best-known and most widely used he-ne laser operates at a wavelength of 632.8 nm, in the red part of the visible spectrum.. Helium-neon laser emits wavelength of 632.8 nm. consists of a mixture of ~90% helium gas, ~10% neon gas the gases are enclosed in a glass tube., helium-neon laser usually called a he-ne laser is a type of gas laser in which a mixture of helium and neon gas is used as gain medium..

The laser emits light with a wavelength of 632.82 nm in air. the wavelength is completely stable and can be used as a reference. the laser light is emitted in a well-defined direction as a thin light ray. suited for many optics demonstrations such as refraction, interference and communication., see below the speed of light (in a vacuum and all that), c, has associated with it frequency, ν, and wavelength, λ. wavelength is in meters, and frequency has units of s^"-1". speed of light c=λν = 3.00xx10^8 m/s wavelength of light: λ=c/ν frequency of light: ν=c/λ 633nm xx ("1m"/(10^9nm)) = 6.33x10^-7 m frequency: ν=c/λ = (3.00xx10^8 m/s)/(6.33x10^-7 m) v = 4.74xx10^14 s^-1.

The most common wavelength produced by he-ne lasers is 632.8nm, although two lower power (1.152µm and 3.391µm) infrared wavelengths can be produced if desired. majority of he-ne lasers generate less than 10m watt of power, but some can be obtained commercially with up to 50m watts of power., exercise iii.2: from the wavelength of the he-ne laser line, λ = 6.328 x 10-7 m, calculate its frequency. thus we get a band of frequencies eligible to participate in stimulated emission and thus to be amplified. the laser light produced then also has a band of frequencies centered about v.

The adopted value for vacuum wavelength of an uncalibrated helium-neon laser is 632.9908 nm, and the relative standard uncertainty is 1.5x10^-6., the 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 632.8nm (red). it also has lasing transition in ir, orange and green.