LASERS CERTIFICATION EXAM | QUESTION AND
ANSWERS.
Theorized the concept of stimulated emission - Answer: Einstein
Theorized that an excited electron will spontaneously return to its ground state -
Answer: Bohr
First ruby laser was created in _____ by ______. - Answer: 1960, Ted Maiman
_________ reported in 1965 that a ruby laser could vaporize enamel. - Answer: Stern
and Sognnaes
First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. - Answer: 1990,
soft tissue
In _____ the first dental hard tissue was FDA cleared and is called _______. And the
______ laser a year later. - Answer: 1997
Er: YAG laser
Er, Cr: YSGG
The word LASER is an acronym standing for _________. - Answer: Light Amplification
by Stimulated Emission of Radiation
Laser parameters include what 3 things? - Answer: 1)Duration of exposure
2)Fiber Diameter
3)Wavelength
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, Lasers are:
______chromatic?
_____directional?
coherent or noncoherent?
emitted from a stimulated ____________. - Answer: monochromatic: made of a single
wavelength (visible or infrared)
unidirectional
coherent (all peaks and valleys of each wave travel in unison)
active medium
What states can the active medium be in? - Answer: solid, gas, semiconductor
What type of active medium is used in Er: YAG? - Answer: solid state using crystal
matrix (erbium laced yttrium, aluminum and garnet)
What type of gas is used when the active medium is sealed in an air tight chamber? -
Answer: CO2
Diode lasers have what type of active medium? - Answer: semiconductor
what photons form the laser? - Answer: light that leaks from the output coupler
Stimulated emission: - Answer: atoms of the active medium are stimulated to a higher
energy level--> released as a photon as the atom returns to a more stable lower energy
level.
Amplification - Answer: Released photons can go on to stimulate more atoms in the
crystal, thus producing more photons
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
ANSWERS.
Theorized the concept of stimulated emission - Answer: Einstein
Theorized that an excited electron will spontaneously return to its ground state -
Answer: Bohr
First ruby laser was created in _____ by ______. - Answer: 1960, Ted Maiman
_________ reported in 1965 that a ruby laser could vaporize enamel. - Answer: Stern
and Sognnaes
First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. - Answer: 1990,
soft tissue
In _____ the first dental hard tissue was FDA cleared and is called _______. And the
______ laser a year later. - Answer: 1997
Er: YAG laser
Er, Cr: YSGG
The word LASER is an acronym standing for _________. - Answer: Light Amplification
by Stimulated Emission of Radiation
Laser parameters include what 3 things? - Answer: 1)Duration of exposure
2)Fiber Diameter
3)Wavelength
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, Lasers are:
______chromatic?
_____directional?
coherent or noncoherent?
emitted from a stimulated ____________. - Answer: monochromatic: made of a single
wavelength (visible or infrared)
unidirectional
coherent (all peaks and valleys of each wave travel in unison)
active medium
What states can the active medium be in? - Answer: solid, gas, semiconductor
What type of active medium is used in Er: YAG? - Answer: solid state using crystal
matrix (erbium laced yttrium, aluminum and garnet)
What type of gas is used when the active medium is sealed in an air tight chamber? -
Answer: CO2
Diode lasers have what type of active medium? - Answer: semiconductor
what photons form the laser? - Answer: light that leaks from the output coupler
Stimulated emission: - Answer: atoms of the active medium are stimulated to a higher
energy level--> released as a photon as the atom returns to a more stable lower energy
level.
Amplification - Answer: Released photons can go on to stimulate more atoms in the
crystal, thus producing more photons
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
