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Flashcards in Laser ppt Deck (55)
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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

CO2 laser properties?
WL 10,600

Longer WL= Low freq= Low energy