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 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., helium–neon (he–ne) lasers are a frequently used type of continuously operating gas lasers, most often emitting red light at 632.8 nm at a power level of a few milliwatts and with excellent beam quality. the gain medium is a mixture of helium and neon gas in a glass tube, which normally has a length of the order of 15–50 cm..

He-ne laser he-ne laser construction. he-ne laser consists of a narrow discharge tube of bore glass or quartz of length 10 to 100 cm with a diameter of the order of 5mm to 10mm.; the tube is filled with a mixture of helium and neon gases, approximately in the ratio 85 % a helium and 15% neon, contained at low pressure (typically ~2-3 torr)., 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..

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 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..

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., with an emphasis on satisfying a variety of applications and budgetary needs, we offer a variety of 633 nm wavelength he ne laser power levels ranging from 0.5 mw to 35 mw. 633 nm wavelength power from 0.5 - 35 mw polarized or randomly polarized output optimized cavity mirror performance and quality.

Thorlabs' stabilized helium neon laser, with a center wavelength of 632.991 nm, allows for either frequency or intensity stabilization, necessary for many spectroscopy, interferometry, and wavemeter applications. in frequency-stabilized mode, the laser will keep its lasing frequency (i.e., wavelengt