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Flashcards in Low Power Laser Deck (37)
1

laser stands for

light amplification by stimulated emission of radiation

2

device that produces light is blank

monochromatic/collimated/coherent

3

Single wavelength
Single color

monochromatic

4

Does not spread or diverge with distance
Able to be focused precisely on a small area

collimation

5

Photons in phase temporally and spatially

coherence

6

gaseous laser gases

helium neon

7

gallium, aluminum, arsenide make up these lasers

diode

8

gaseous resonance chamber is blanked while diode has a blank

sealed, gap

9

Electric current passes through resonance chamber stimulating laser’s active medium

power source

10

lasers with HeNe

red light lasers

11

lasers with GaAIAs and GaAs and diode type

infrared light

12

contains only one diode of a specific lasing medium

single diode

13

contains a group of diodes that may be of differing lasing mediums

cluster diode

14

Class blank lasers can damage the retina if the laser beam is focused on the eye.

3b

15

the process of stimulating or inhibiting (modulating) the biologic responses of cells due to exposure to light

photobiomodulation

16

increase cell function effect of laser

photobiostimulation

17

decrease cell function effect of laser

photobioinhibition

18

dose response of laser follows this principle

arndt shultz

19

photon absorption follows law of blank

grotthus draper

20

(color lover) a photo-acceptor molecule
Melanin – skin darkening
Hemoglobin – RBC
Retinal rhodopsin – color vision

chromophores

21

shorter wavelengths scatter blank than longer wavelengths

more

22

absorption is inversely proportional to penetration, and is greater for blank wavelengths

shorter

23

Dependent upon frequency of laser light and tissue being irradiated

depth of penetration

24

HeNe lasers are blank penetrating than GaAs or GaAlAs lasers

less

25

blank penetration occurs by absorption while blank occurs in deeper tissues

direct, indirect

26

Al Ga As laser produces a blank shaped beam

elliptical

27

lllt causes increased Mast cell release
Interleukin 6 formation (inflammatory regulator)
Decreased dermal necrosis

acute phase

28

lllt causes Wound contraction
Tensile strength/stress

chronic

29

lllt causes
Enhanced collagen formation
Degranulation
Myofibroblast conversion

subacute

30

power (P) delivered per area of laser probe (cm2)

power density

31

Energy delivered per area of laser probe x time of irradiation

energy density

32

amount of laser energy delivered by each diode in joules

dose per diode

33

Total amount of laser energy delivered to the tissue
in joules

dose tissue

34

laser power output is uninterrupted for entire time of irradiation

continuous

35

laser power output is constantly interrupted for entire time of irradiation

pulsed

36

number of joules for power during lllt increases with blank

stage of healing

37

contraindications for lllt

over eyes, over malignancy, pregnant, epilepsy, over thyroid