Masers are used as timekeeping devices in atomic clocks, and as extremely low-noise microwave amplifiers in radio telescopes and deep-space spacecraft communication ground-stations. Modern masers can be designed to generate electromagnetic waves at microwave frequencies and radio and infrared frequencies. For this reason, Townes suggested ...

2012年8月16日 · Using spare chemicals, a laser bought on eBay and angst from a late-night argument, physicists have got the world's first room-temperature microwave laser working.

2012年8月15日 · Using spare chemicals, a laser bought on eBay and angst from a late-night argument, physicists have got the world's first room-temperature microwave laser working. The achievement comes nearly...

2024年3月20日 · Microwaves occupy the frequency range of 300 MHz to 300 GHz, corresponding to wavelengths between 1 mm and 1 m. Lasers, on the other hand, emit highly concentrated electromagnetic radiation at specific frequencies within the visible, infrared, or ultraviolet spectrum. Laser wavelengths can range from a few nanometers to several micrometers.

2005年1月27日 · The ubiquitous laser, appearing today in supermarket checkout machines, CD players, and eye surgeon’s offices, developed out of the maser, which was first described in Physical Review papers published in 1954 and 1955. The maser–the name stands for “microwave amplification by stimulated emission of radiation”–in turn depended on an ...

A LASER is a MASER that works with higher frequency photons in the ultraviolet or visible light spectrum (photons are bundles of electromagnetic energy commonly thought of as "rays of light" which travel in oscillating waves of various wavelengths) .

A team of researchers has built an exciting new device to dramatically amplify microwave signals. It seems like a science fiction MacGuffin: it uses a purple diamond in a quartz tube exposed to...

2018年3月21日 · In some cases, microwave devices could be more useful than lasers because microwaves can pass through materials than optical light can’t. The latest device, made by physicists at Imperial College...

Maser is an acronym of microwave amplification by stimulated emission of radiation. Masers predate lasers by several years, and the original maser was developed by Charles Townes at Columbia University and first demonstrated in 1953 with an output near 24 GHz.

2015年1月15日 · Princeton University researchers have built a rice grain-sized microwave laser, or “maser,” powered by single electrons that demonstrates the fundamental interactions between light and moving electrons, and is a major step toward building quantum-computing systems out of semiconductor materials.