Nathan into the mode of the incoming photon.

Nathan Deal, politician, once said
of technology that, “The aim of scientific advancement should be to affirm and
to improve human life.”, This quote portrays a clear reminder of the truth
surrounding the targets of our technological advancements. In today’s
contemporary society, scientists conduct studies in order to improve the issues
in daily life. According to Jobson Research, 61% of the United States
population would benefit from some kind of eye correction. Therefore, there is
demand in the market for an effective procedure for vision corrections. Previous
products include contact lenses, however, according
to the FDA, there are risks of wearing contact lenses long term. As they sit
directly on the surface of the eye, they not only deprive the eye of oxygen but
also put the wearer at risk of infection. As well as, glasses, which can be irritating for
physical and recreational activities. As a result, Theodore Maiman, founded the study of photonics,
which is the technology for generating light. As more
information was gathered, Theodore was able to create a device known as a
laser, which generates an
intense beam by stimulated emission of photons from atoms. The device being
particularly effective in alignment surgery, as the ultraviolet light, is able to vaporize and remove
tissue from the eye’s cornea, reshaping it to accurately
focus light on the retina for improved vision. This task analyses a device that utilises a
form of photonic application, the laser, providing a detailed explanation of
how the product is able to manipulate light in order to perform its task.


Theodore Maiman, founded the study of photonics, which is the technology for
generating light. A light beam consists of small bunches of energy, called photons, which
have a high energy and move at very intense speeds, with a
zero rest mass, therefore can not be slowed or brought to rest. When light
interacts with an excited atom, an emission of photons will be released. In a
stimulated emission, a photon is emitted into the mode of
the incoming photon. This procedure of manipulating and generating light is
completed to ultimately, produce a laser, which can be effective in alignment
surgery. Particularly in laser eye surgery,
which utilizes a computer-controlled excimer laser.
Emitting pulses of ultraviolet light, with high energy photons, to reshape the
corneal surface by removing tissue. The effect is to allow light entering the
eye to be properly focused onto the retina for clearer vision. The procedure entails the surgeon creating a
‘flap’ in the cornea using a femtosecond laser, which belongs to the category
of “ultrafast lasers”, emitting ultra fast
energy pulses precisely target and break apart tissue or other substances at a
molecular level, without damaging adjacent areas. The
conversion of light from the beam turning to heat means the thermal effects of
the laser beam interacting with the tissue, creates the removal of tissue and
penetrates through. The surgeon then folds
back the hinged flap to access the underlying cornea, the stroma and removes some
corneal tissue using an excimer laser. Which
is an instrument that generates nanosecond pulses belonging to the
category of “ultraviolet lasers”. The laser uses shorter wave, ultraviolet light, to vaporize and remove
tissue from the eye’s surface using its high
photon energy and extremely high peak power. The ultraviolet light beam removes “ablate”
microscopic amounts of tissue from the cornea to reshape it so it more
accurately focuses light on the retina for improved vision.

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