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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 ...
An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum.
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 ]
Charles Hard Townes (July 28, 1915 – January 27, 2015) was an American physicist. [4] [5] Townes worked on the theory and application of the maser, for which he obtained the fundamental patent, and other work in quantum electronics associated with both maser and laser devices.
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 ...
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". [11] When similar optical devices were developed they were first called optical masers, until "microwave" was replaced by "light" in the acronym, to become laser.
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
A megamaser acts as an astronomical laser that beams out microwave emission rather than visible light (hence the ‘m’ replacing the ‘l’). [1]A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission.