When the gain medium bandwidth is smaller than the cavity mode spacing, the laser output consists of a single mode and operates as a single frequency laser c. Laser Radiation Properties I Laser radiation is nearly monochromatic.
Laser radiation contains a narrow band of wavelengths and can be produced closer to monochromatic than light from other sources. Laser radiation is highly directional. The radiation is produced in a beam that is spatially narrow and has low divergence relative to other light sources. Laser radiation is highly coherent , which means the waves of light emitted have a constant relative phase.
The waves of light in a laser beam are thought of as in phase with one another at every point. Laser radiation has both spatial and temporal coherence, characterized by the coherence length and the coherence time.
The light from a laser is said to be coherent, which means the wavelengths of the laser light are in phase in space and time. These three properties of laser light are what make it more of a hazard than ordinary light. Laser light can deposit a great deal of energy within a very small area - as James Bond nearly found out in Goldfinger! Next section. Send Email. Skip to main content. Toggle menu Go to search page. Search Field. You are here Home » Laser Safety » Laser light.
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 , 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.
Home Blog World of lasers The sun, stars and fire are natural sources of ordinary light. Ordinary light Ordinary light sources mainly emit polychromatic light and their emission is spatial. Then why is the laser light different from ordinary light? Because laser light is: Monochromatic - It contains only one specific wavelength and hence one color. Coherent - The motion of all photons is coordinated.
Directional - The laser beam is very narrow, concentrated and therefore, it is a high intensity source. Laser light properties are used all around us 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.
Gentec-EO Gentec Electro-Optics is specialized in laser beam and terahertz source measurement and analysis. With an outstanding year track record of innovation, developing and providing state-of the-art technologies to the laser market, Gentec-EO has become The Expert of the laser beam measurement field. For all sorts of laser applications from the factory to the hospital, laboratory and research center, Gentec-EO offers the broadest range of off-the-shelf and custom solutions, and stands ready to serve you now and in the future.
0コメント