Laser (Light Amplification by Stimulated Emission of Radiation) is an artificial source of light radiation that emits a coherent beam of photons, as the source is stable in frequency, wavelength, and power. Unlike the light emitted by common sources, such as light bulbs, laser light is mostly monochromatic, i.e. only one specific wavelength (color).

Laser specifications change over time for many reasons and it causes problems accross all industries. Learn about how laser output measurement solves numerous problems in YOUR industry. Download the guide below.   Gentec-EO's high-accuracy laser beam measurement instruments help engineers, scientists and technicians in all sorts of laser applications from the factory to the hospital, laboratory and research center. Learn about our solutions for these measurement types: Laser power meters Laser energy meters Laser beam profilers Terahertz power meters

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Vision RT announced that it will use its exhibit at this year’s American Society for Radiation Oncology (ASTRO) meeting in San Francisco to highlight its cutting-edge optical guidance technology.

November 1, 2007 - Vision RT launched its recently FDA-cleared GateCT that tracks the 3D surface of a patient in order ...

However, real laser light is not purely directional because some propagation effects can distort the laser beam, especially if it is interacting with nonlinear media. When you propagate laser beam it gets broadened with distance. In order to achieve an adequate beam size and directivity you need to additionally precisely control, measure and direct laser beam with lenses and mirrors.

Specific properties of artificial light obtained by lasers are advantageous for transmitting data for hundreds of miles, up to terabits per second, by a convenient, single wavelength coherent source. Nowadays, you can transmit data with laser beams through free-space optics technology over moderate distances with many Gbit/s data rates.

Portable laser power meter for up to 250 W with flexible calibration options so the customers only pay for what they use. Includes 3 measurement modes : SSP, CWP and SSE.

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Ordinary light sources mainly emit polychromatic light and their emission is spatial. The source of ordinary light emits many rays in all directions, randomly. Ordinary light consists of a mixture of rays with different wavelengths, where each wavelength corresponds to one color that your eyes register.

The sun, stars and fire are natural sources of ordinary light. We recognize the light received by the human eye as white, whether it is the light of a lamp or the sun. However, we do not notice the spectrum of colors that make white, except through a prism by which light can be decomposed into different components.

The new AlignRT frameless SRS module has just received 510(k) clearance from the FDA. This offering utilizes Vision RT’s latest HD camera technology, includes an advanced calibration solution for ensuring the precise alignment of AlignRT with the beam iso-center, and the 3Degree head adjuster which allows precise corrections for pitch, roll and yaw rotations with open mask immobilization.

When we talk about highly monochromatic lasers, we consider that the beam linewidth is very narrow. You can use these lasers especially for applications such as laser spectroscopy or coupling with optical fibers in fiber communications.

Laser specifications change over time for many reasons and it causes problems accross all industries. Learn about how laser output measurement solves numerous problems in YOUR industry. Download the guide below.

Take a look at other types of light sources: incoherent light sources (light bulbs, LED, stars). These sources produce radiation by spontaneous emission in all directions, with a spread of wavelengths and no interrelationships among individual photons. Spontaneous emission is a random process. On the other hand, lasers use stimulated emission, producing photons with identical properties (all photons move at the same wavelength and direction).

Vision RT announced it will be exhibiting at the American Society for Radiation Oncology (ASTRO) 2016 Annual Meeting Sept. 25-28 in Boston. New data will be released at this meeting from a trial at the National Cancer Institute (NCI)-accredited Lineberger Cancer Center at the University of North Carolina showing zero radiation-induced abnormalities in blood flow to the heart in all patients where Vision RT’s product was used in left breast radiotherapy.

The laser has also become an important research instrument and has found its application in many fields, such as the correction of vision, the sharpening of the astronomical image from space, testing the DNA molecule and in obtaining pure energy by laser fusion of atoms.

July 31, 2012 — Civco Medical Solutions is showcasing new robotic integration, a new addition to the Universal Couchtop family and new fiducial markers at the 2012 American Association of Physicists in Medicine (AAPM) annual meeting in Charlotte, N.C.

Since the discovery of the laser, more than 30 Nobel Prizes have been awarded in the field of natural sciences for scientific discoveries directly related to lasers. In 2018, Donna Strickland became the second woman to receive a Nobel Prize in physics, which she was awarded for her work on ultra-short and high-intensity laser pulses. Measuring the laser's properties with precision and accuracy is key to such research, which is why Gentec-EO develops and manufactures high-accuracy laser power meters and laser energy meters.

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Laser power detector for measurement up to 50 000 W that traps > 97 % of the incident light and handles high intensities of small beams.

The laser beam is highly coherent, which means that the electromagnetic waves are in the same phase with each other and propagate in the same direction. You can get a laser beam of high intensity and directivity by superposition of electromagnetic waves that are in phase. Such a highly directional beam can be focused on a very sharp point, which is not possible with ordinary light.

You can be surprised by the fact that measured linewidths of real solid-state lasers, such as diode-pumped YAG lasers, are <1 kHz. This is not the bottom line. In fact, linewidths less than 1Hz are also achievable by suppression of external noise influence. Narrow-linewidth lasers are used in holography, frequency metrology and light detection and ranging (LIDAR).

April 26, 2007 – Vision RT recently introduced its AlignRT, a non-invasive radiation therapy system designed with tools ...

September 30, 2011 — Vision RT announced it has increased sales of AlignRT, its 3-D imaging platform, to several advanced TrueBeam facilities in the United States in recent months.

Gentec-EO's high-accuracy laser beam measurement instruments help engineers, scientists and technicians in all sorts of laser applications from the factory to the hospital, laboratory and research center. Learn about our solutions for these measurement types: