Lasers Test 1
Light, amplified, stimulated, emission, radiation – answer L__________
A________ by
S__________
E________ of
R_________
infrared, ionizing - answer The lasers we use fall into the ________ area.
X-rays are _______ but infrared rays are not
diodes - answer The wavelength of dental lasers we use are in ______
characteristics of white (visible) light - answer multiple wavelengths
non-directional
non-focused
red spectrum = lasers
purple = x-ray - ionizing
collimated, monochromatic, coherency - answer characteristic of laser light
__________ - wavelengths can be focused, very directional
__________ (one color) - very precise color or wavelength
_________ - wavelengths are superimposed on one another, synchronized in phase
they are not divergent, they all move together
nanometers, 1000 - answerwavelengths are measured in __________ (nm)
there are ______ nm in I micrometer
wavelength - answerthe distance from wave crest (peak_ to wave crest (peak)
visible and infrared portions - answerWhere in the spectrum do most lasers operate?
thermal - answerlasers work by conversion of light energy into ______ energy
, atoms inside the laser resonator are excited by energy, which comes from pumping the
laser medium. Photons of energy are emitted. mirrors surrounding the active medium
further increase this light
these excited atoms become collimated and coherent and exit the resonator as a beam
water, hydroxyapatite, melanin, hemoglobin - answerwhat are the mediums used to
determine the type of laser
hard tissue lasers - ________ and _______
soft tissue lasers - _______ and _______
YAG - answer_______ are more powerful than diodes
water - answerlasers work by focusing a beam of light, or a single wavelength of
photons, at a target
when the laser light contacts human tissue, it vaporizes _____ content within the cell
and creates a char layer
Depending on their wavelengths of light, lasers can penetrate deep into human tissues
joule, watt, smaller, higher, more, less - answer_______ is a measure of energy
_______ is a unit of power
one watt = one joule for one second
power density: watts/cm2
the ______ the focal spot, the _____ the power density
a fiber end has ____ power
whitening hand piece has _____ power
photon - answerthe elemental quantity, or quantum of radiant energy
watts - answerwhen using a laser, power density is measured in ______/cm2
watts - answerlaser power is expressed as _______
platinum cable - answerdental laser beams are conducted by all of the following except
quartz fibers
Light, amplified, stimulated, emission, radiation – answer L__________
A________ by
S__________
E________ of
R_________
infrared, ionizing - answer The lasers we use fall into the ________ area.
X-rays are _______ but infrared rays are not
diodes - answer The wavelength of dental lasers we use are in ______
characteristics of white (visible) light - answer multiple wavelengths
non-directional
non-focused
red spectrum = lasers
purple = x-ray - ionizing
collimated, monochromatic, coherency - answer characteristic of laser light
__________ - wavelengths can be focused, very directional
__________ (one color) - very precise color or wavelength
_________ - wavelengths are superimposed on one another, synchronized in phase
they are not divergent, they all move together
nanometers, 1000 - answerwavelengths are measured in __________ (nm)
there are ______ nm in I micrometer
wavelength - answerthe distance from wave crest (peak_ to wave crest (peak)
visible and infrared portions - answerWhere in the spectrum do most lasers operate?
thermal - answerlasers work by conversion of light energy into ______ energy
, atoms inside the laser resonator are excited by energy, which comes from pumping the
laser medium. Photons of energy are emitted. mirrors surrounding the active medium
further increase this light
these excited atoms become collimated and coherent and exit the resonator as a beam
water, hydroxyapatite, melanin, hemoglobin - answerwhat are the mediums used to
determine the type of laser
hard tissue lasers - ________ and _______
soft tissue lasers - _______ and _______
YAG - answer_______ are more powerful than diodes
water - answerlasers work by focusing a beam of light, or a single wavelength of
photons, at a target
when the laser light contacts human tissue, it vaporizes _____ content within the cell
and creates a char layer
Depending on their wavelengths of light, lasers can penetrate deep into human tissues
joule, watt, smaller, higher, more, less - answer_______ is a measure of energy
_______ is a unit of power
one watt = one joule for one second
power density: watts/cm2
the ______ the focal spot, the _____ the power density
a fiber end has ____ power
whitening hand piece has _____ power
photon - answerthe elemental quantity, or quantum of radiant energy
watts - answerwhen using a laser, power density is measured in ______/cm2
watts - answerlaser power is expressed as _______
platinum cable - answerdental laser beams are conducted by all of the following except
quartz fibers
