News tagged with laser

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

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 Oct. 24 in Lasers ...

Nov 21, 2013
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Shining the soothing light

Almost all patients suffering from head and neck squamous cell carcinoma (HNSCC) develop canker sores, a complication resulting from different modalities of treatment, namely stem cell transplantation, chemotherapy, and radiotherapy. ...

Oct 21, 2013
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Ablative carbon dioxide laser effective for rhinophyma

(HealthDay)—Good cosmetic outcomes are possible using fractionated ablative carbon dioxide laser therapy for mild-to-moderate cases of rhinophyma, according to research published online Oct. 5 in Lasers in Surgery and Medicine.

Oct 17, 2013
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Light assists in monitoring brain injuries

The information about alterations in cerebral perfusion is of crucial importance in treatment of patients with severe neurological injuries. The medical equipment used in clinics does not allow, however, for continuous measuring ...

Aug 29, 2013
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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.

This text uses material from Wikipedia, licensed under CC BY-SA

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