A helium–neon laser or He-Ne laser is a type of gas laser whose high energetic medium gain medium consists of a mixture of ratio (between 5:1 and 20:1)...
14 KB (1,684 words) - 23:37, 19 July 2024
laser and the first laser to operate on the principle of converting electrical energy to a laser light output. The first gas laser, the Helium–neon laser...
8 KB (875 words) - 04:18, 12 May 2024
emission line is responsible for the characteristic red light of helium–neon lasers. Although neon has some applications in plasma tubes and as a refrigerant...
32 KB (3,820 words) - 21:11, 3 August 2024
forming a Fabry–Pérot resonator. Unlike helium–neon lasers, the energy level transitions that contribute to laser action come from ions. Because of the...
7 KB (953 words) - 13:07, 27 November 2023
amplify light coherently. Gas lasers using many different gases have been built and used for many purposes. The helium–neon laser (HeNe) can operate at many...
114 KB (12,669 words) - 16:01, 17 August 2024
DiscoVision in 1978. From 1978 until 1984, all LaserDisc player models read discs by using a helium–neon laser. In 1984, Pioneer Corporation introduced the...
17 KB (2,478 words) - 12:53, 13 April 2024
Lapping (redirect from Helium light band)
twentieth of the wavelength of light from the commonly used 632.8 nm helium neon laser light source. Surfaces this flat can be molecularly bonded (optically...
11 KB (1,574 words) - 07:35, 6 June 2024
Confocal microscopy (redirect from Confocal laser scanning microscopy)
epi-Illumination-reflection microscopy for the observation of nerve tissue. A 5 mW Helium-Neon-Laser with 633 nm light was reflected by a semi-transparent mirror towards...
46 KB (5,298 words) - 06:21, 9 April 2024
IBM 3800 (section Long Life Helium-Neon Laser)
designed digital voltmeter and a significant redesign of the laser print head. The helium-neon laser developed for the model 001 was retained, but lenses were...
33 KB (3,658 words) - 14:15, 8 July 2024
Noble gas (redirect from Helium family (p6))
the naturally occurring members of group 18 of the periodic table: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Under...
72 KB (7,322 words) - 11:30, 17 August 2024
Biophotonics (section Laser micro-scalpel)
5 nm, 799.3 nm - Helium–neon laser: 632.8 nm (543.5 nm, 594.1 nm, 611.9 nm) - HeCd lasers: 325 nm, 442 nm Other commercial gas lasers like carbon dioxide...
26 KB (3,187 words) - 02:42, 8 November 2023
reproducibility from lab to lab, the 17th CGPM also made the iodine-stabilised helium–neon laser "a recommended radiation" for realising the metre. For the purpose...
105 KB (11,287 words) - 20:47, 14 August 2024
only have two analog audio tracks. The earliest players employed gas helium–neon laser tubes to read discs and had a red-orange light with a wavelength of...
83 KB (11,112 words) - 01:19, 9 August 2024
mercury, which functioned as a liquid mirror to modulate the beam of a Helium-Neon laser from the sound thus generated. Photographs of this work can be found...
16 KB (2,031 words) - 14:04, 17 July 2024
gas such as hydrogen or nitrogen to a helium–oxygen mixture. Helium–neon lasers, a type of low-powered gas laser producing a red beam, had various practical...
146 KB (16,168 words) - 00:01, 17 August 2024
This is a list of laser types, their operational wavelengths, and their applications. Thousands of kinds of laser are known, but most of them are used...
25 KB (595 words) - 10:50, 20 June 2024
high-resolution lithography. Herriott also helped bring the first helium-neon laser into operation. He was the president of the Optical Society of America...
6 KB (481 words) - 18:32, 9 January 2023
to link to other atoms. Neon has a Lewis basicity or proton affinity of 2.06 eV. Neon is theoretically less reactive than helium, making it the least reactive...
34 KB (4,147 words) - 19:23, 12 May 2024
world's first hand-held helium–neon laser bar code scanner. These bar code scanners use a broad array of technologies including laser, holographic, vision-based...
3 KB (292 words) - 05:56, 16 July 2024
Janna V.; Mykchaylova, Oksana B. (2003). "The Action of Argon and Helium-Neon Laser Radiation on Growth and Fructification of Culinary-Medicinal Mushrooms...
30 KB (3,026 words) - 14:35, 17 July 2024
lasers were not available; because of the high power requirement, the helium–neon laser in the sight used an external power supply that Schwarzenegger had...
84 KB (8,617 words) - 06:14, 20 August 2024
transmitted to the medium. A helium–neon (HeNe) laser uses an electrical discharge in the helium-neon gas mixture, a Nd:YAG laser uses either light focused...
6 KB (767 words) - 06:39, 16 August 2024
interferometer lit by a helium–neon laser. In modern FTIR systems the constant mirror velocity is not strictly required, as long as the laser fringes and the...
37 KB (4,774 words) - 15:30, 26 June 2024
details a method developed by Heine that employs a single 2.2 mW helium–neon laser for both tracking a record groove and reproducing the stereo audio...
25 KB (2,669 words) - 04:09, 31 July 2024
(solid-state lasers) Glasses, e.g. silicate or phosphate glasses, doped with laser-active ions; Gases, e.g. mixtures of helium and neon (HeNe), nitrogen...
9 KB (1,589 words) - 07:57, 3 December 2023
methane-stabilised helium–neon laser (λ ≈ 3.39 μm). The krypton line was found to be asymmetrical, so different wavelengths could be found for the laser light depending...
79 KB (14,902 words) - 01:31, 17 August 2024
Holography (redirect from Laser holograms)
than that of traditional helium-neon gas lasers. This was a very important development for amateurs, as the price of red laser diodes had dropped from...
66 KB (7,974 words) - 15:15, 18 August 2024
480 nm metal vapor, ionized gas lasers of helium-cadmium at 442 nm and 10–200 mW argon-ion lasers at 458 and 488 nm Lasers emitting wavelengths below 445 nm...
18 KB (1,902 words) - 06:39, 7 August 2024
Compact disc (redirect from Compact Laser Disc)
the second optical disc technology to be invented, after the much larger LaserDisc (LD). By 2007, 200 billion CDs (including audio CDs, CD-ROMs and CD-Rs)...
44 KB (8,688 words) - 13:35, 16 August 2024