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The laser works by the same principle as the maser, but produces higher-frequency coherent radiation at visible wavelengths. The maser was the precursor to the laser, inspiring theoretical work by Townes and Arthur Leonard Schawlow that led to the invention of the laser in 1960 by Theodore Maiman. When the coherent optical oscillator was first ...
Despite the apparent rarity of these events, observation of the intense maser emission has been suggested as a detection scheme for extrasolar planets. [18] Ultraviolet light from the Sun breaks down some water molecules to form hydroxides that can mase. In 1997, 1667-MHz maser emission characteristic of hydroxide was observed from comet Hale-Bopp.
The first device using amplification by stimulated emission operated at microwave frequencies, and was called a maser, for "microwave amplification by stimulated emission of radiation". [10] When similar optical devices were developed they were first called optical masers, until "microwave" was replaced by "light" in the acronym, to become laser.
James Power Gordon (March 20, 1928 – June 21, 2013) was an American physicist known for his work in the fields of optics and quantum electronics.His contributions include the design, analysis and construction of the first maser in 1954 as a doctoral student at Columbia University under the supervision of C. H. Townes, development of the quantal equivalent of Shannon's information capacity ...
A maser is a device that produces coherent electromagnetic waves. Maser may also refer to: Maser (rocket), a sounding rocket launched from Esrange in Sweden; Maser, Veneto, a municipality in Italy; Astrophysical maser, a naturally occurring source of stimulated spectral line emission; Maser, a codename later used by the DC Comics character Air Wave
In 1984, water maser emission was discovered in NGC 4258 and NGC 1068 that was of comparable strength to the hydroxyl maser in Arp 220, and are as such considered water megamasers. [12] Over the next decade, megamasers were also discovered for formaldehyde (H 2 CO) and methine (CH). Galactic formaldehyde masers are relatively rare, and more ...
A hydrogen maser, also known as hydrogen frequency standard, is a specific type of maser that uses the intrinsic properties of the hydrogen atom to serve as a precision frequency reference. Overview [ edit ]
Maser components, 1954; gift of Charles Townes. Exhibit in National Museum of American History, Washington, DC, USA. ... Usage on pt.wikipedia.org James Power Gordon;