News tagged with laser

Related topics: light , laser beam , atoms , wavelength , nature photonics

1,440-nm laser beneficial for photodamage in Asians

(HealthDay)—Four treatments with 1,440-nm fractional laser produce mild improvement in select signs of photodamage in an Asian population, according to a study published March 14 in Lasers in Surgery an ...

Apr 10, 2014
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New non-invasive treatment of basal cell carcinoma

Research conducted by H. Ray Jalian, M.D., Mathew M. Avram, M.D., J.D., Kelly J. Stankiewicz, M.D., Joshua D. Shofner, M.D., and Zeina Tannous, M.D. was selected as Editor's Choice for the January 2014 issue ...

Feb 05, 2014
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Better memory with laser surgery for epilepsy

A laser-based procedure for people with medication-resistant epilepsy may result in better memory function than standard surgery, while still providing comparable seizure control rates, doctors say.

Dec 11, 2013
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3D imaging captures changes in port wine stains

(HealthDay)—Three-dimensional (3D) high precision surface imaging can be used to monitor changes in the area and volume of port wine stains following laser treatment, according to a study published online ...

Nov 21, 2013
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Laser

A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.

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