Browse Definitions :
Definition

saser (sound amplification by stimulated emission of radiation)

A saser (sound amplification by stimulated emission of radiation) is a device that emits concentrated, highly-focused sound waves.

The saser is the sonic equivalent of the laser and is often referred to as a sound laser or acoustic laser. Sasers beam concentrated sound waves in the terahertz (THz) range. While still mostly a curiosity in the scientific world, sasers offer a number of potential practical uses.

Sasers could read or relay digital information, as many lasers do. Sasers could also enable super-accurate sonograms able to, for example, detect defects in electronics on the microscopic nanometer level. Medical imaging and biometrics are among many other possible areas of application. At low frequencies, sasers can produce sound at a distance; at high frequencies, they can heat a distant target.

A saser consists of a pump to add energy (typically in the form of intense light) to the system of a 50-layer super-lattice that alternates sheets of gallium arsenide and aluminum arsenide, each merely a couple of atoms thick. The super-lattice is held in a structure within which the layers are excited, bouncing particles and refocusing them until they reach sufficient energy to be released as photons, in a focused stream of associated particles that vibrate at the same frequency.

This was last updated in November 2015

Continue Reading About saser (sound amplification by stimulated emission of radiation)

SearchNetworking
SearchSecurity
  • man in the browser (MitB)

    Man in the browser (MitB) is a security attack where the perpetrator installs a Trojan horse on the victim's computer that is ...

  • Patch Tuesday

    Patch Tuesday is the unofficial name of Microsoft's monthly scheduled release of security fixes for the Windows operating system ...

  • parameter tampering

    Parameter tampering is a type of web-based cyber attack in which certain parameters in a URL are changed without a user's ...

SearchCIO
  • e-business (electronic business)

    E-business (electronic business) is the conduct of business processes on the internet.

  • business resilience

    Business resilience is the ability an organization has to quickly adapt to disruptions while maintaining continuous business ...

  • chief procurement officer (CPO)

    The chief procurement officer, or CPO, leads an organization's procurement department and oversees the acquisitions of goods and ...

SearchHRSoftware
SearchCustomerExperience
  • clickstream data (clickstream analytics)

    Clickstream data and clickstream analytics are the processes involved in collecting, analyzing and reporting aggregate data about...

  • neuromarketing

    Neuromarketing is the study of how people's brains respond to advertising and other brand-related messages by scientifically ...

  • contextual marketing

    Contextual marketing is an online marketing strategy model in which people are served with targeted advertising based on their ...

Close