Flashcards in Laser ppt Deck (55)
Loading flashcards...
1
What does LASER stand for
Light
Amplification
by
Stimulated
Emission
of
Radiation
2
what is a device that controls the way energized atoms release photons
Laser
3
what are the 3 main properties of a laser that make if very different from other lights
monochromatic
coherent
directional
4
what property of a laser is that it contains one specific wavelength of light (one specific color).
monochromatic
5
the wavelength of light is determined by what?
the amount of energy released when the electron drops to a lower orbit
6
what property of a laser describes how it is organized- thus each photon moves in step with the others, this means that all the photons have wave fronts that launch in univision
coherent
7
which laser property is that a laser light has a very tight beam and is very strong and concentrated
directional
(a flashlight in contrast releases light in many directions, the light is very weak and diffuse)
8
Carbon dioxide laser properties (2)
invisible
marked with a helium-neon aiming beam
9
what is the Carbon dioxide laser used for
upper airway sx
10
is carbon dioxide laser common
yes,
very common
11
Nd-YAG laser stand for what?
neodymium-yttrium aluminum-garnet laser
12
Nd-YAG laser properties (1)
short wave length allows transmission by fiberoptics
13
Nd-YAG laser is used for what sx's
distal tracheobronchial tree and retina sx
14
KTP laser stand for what?
Potassium-titanylphosphate laser
15
KTP laser can be transmited by what?
fiberoptics
16
KTP laser is used in what sx's
neurosurgical and
otolarygeal
17
Argon Laser can be transmitted by what
fiberoptics
18
Argon laser is used in what sx's
neurological, retinal, and otolaryngological
19
7 wavelengths in order of power (weakest to most powerful
radio
microwave
infrared
visible
ultraviolet
x-ray
gamma ray
20
with laser wavelengths longer wavelengths= what?
lower freq and lower energy
(all start with L)
21
with laser wavelengths shorter wavelengths= what?
higher freq and higher energy
(for jake sHorter= Higher and Higher) : )
22
frequancy is inversly proprtional to what??
wavelength
the higher the frequency the smaller the wavelength
23
what has a higher freguency?
KTP Wave length is 532
or
Nd:YAG wave length 1064
KTP
remember
freq is inversly proportional to wave length
the longer the wavelength the lower freq
24
which laser is for deep tissue? and why?
Nd-YAG
b/c of near infrared I guess????
25
what is the only laser that wet tissue can protect pt (like a wet towel)
CO2 laser
26
what 2 lasers are absorbed by Hgb and melanin or other similar pigments? transmitted through clear substances.
tissue penetration 0.5-2 mm
Argon
KTP
27
which laser is more readily absorbed by dark tissue?
transmitted through clear fluids
tissue penetration 2-6 mm
Nd-YAG
28
which laser is strongly absorbed by water, and thus by all tissue, pigmented or not. tissue penetration <0.5mm
CO2
29
the greater the wavelength = the _______ absorption by water
greater
CO2 greatest WL 10,600
30
