News tagged with laser

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

A second look at glaucoma surgery

New research led by Queen's University professor Robert Campbell (Ophthalmology) has revealed using anti-inflammatory medications after glaucoma laser surgery is not helpful or necessary.

Sep 18, 2014
popularity 2.9 / 5 (8) | comments 0

Using femtosecond lasers to administer drugs

Combining physics and neurobiology to tackle Parkinson's Disease is research "I would never have been able to do outside of OIST," says Professor Keshav Dani. The Okinawa Institute of Science and Technology ...

Jun 26, 2014
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Guard your good vision, experts say

(HealthDay)—Smoking, decorative contact lenses and laser pointers all pose a threat to your eyes, but sitting too close to the television or computer screen doesn't, the U.S. Food and Drug Administration ...

May 23, 2014
popularity 4.6 / 5 (5) | comments 0

Laser-assisted drug delivery is evolving

(HealthDay)—Laser-assisted drug delivery can enhance the permeation of topically applied agents, according to a review published in the April issue of Lasers in Surgery and Medicine.

Apr 27, 2014
popularity 4.5 / 5 (2) | comments 0

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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