LASERS CERTIFICATION EXAM
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Theorized the concept of stimulated emission - CORRECT ANSWER - Einstein
Theorized that an excited electron will spontaneously return to its ground state - CORRECT
ANSWER - Bohr
First ruby laser was created in _____ by ______. - CORRECT ANSWER - 1960, Ted
Maiman
_________ reported in 1965 that a ruby laser could vaporize enamel. - CORRECT
ANSWER - Stern and Sognnaes
First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. - CORRECT
ANSWER - 1990, soft tissue
In _____ the first dental hard tissue was FDA cleared and is called _______. And the ______
laser a year later. - CORRECT ANSWER - 1997
Er: YAG laser
Er, Cr: YSGG
The word LASER is an acronym standing for _________. - CORRECT ANSWER - Light
Amplification by Stimulated Emission of Radiation
Laser parameters include what 3 things? - CORRECT ANSWER - 1)Duration of exposure
2)Fiber Diameter
3)Wavelength
, Lasers are:
______chromatic?
_____directional?
coherent or noncoherent?
emitted from a stimulated ____________. - CORRECT 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? - CORRECT ANSWER - solid, gas,
semiconductor
What type of active medium is used in Er: YAG? - CORRECT 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? - CORRECT
ANSWER - CO2
Diode lasers have what type of active medium? - CORRECT ANSWER - semiconductor
what photons form the laser? - CORRECT ANSWER - light that leaks from the output
coupler
Stimulated emission: - CORRECT 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.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Theorized the concept of stimulated emission - CORRECT ANSWER - Einstein
Theorized that an excited electron will spontaneously return to its ground state - CORRECT
ANSWER - Bohr
First ruby laser was created in _____ by ______. - CORRECT ANSWER - 1960, Ted
Maiman
_________ reported in 1965 that a ruby laser could vaporize enamel. - CORRECT
ANSWER - Stern and Sognnaes
First pulsed Nd:YAG laser released in ______ and cuts ______ tissue. - CORRECT
ANSWER - 1990, soft tissue
In _____ the first dental hard tissue was FDA cleared and is called _______. And the ______
laser a year later. - CORRECT ANSWER - 1997
Er: YAG laser
Er, Cr: YSGG
The word LASER is an acronym standing for _________. - CORRECT ANSWER - Light
Amplification by Stimulated Emission of Radiation
Laser parameters include what 3 things? - CORRECT ANSWER - 1)Duration of exposure
2)Fiber Diameter
3)Wavelength
, Lasers are:
______chromatic?
_____directional?
coherent or noncoherent?
emitted from a stimulated ____________. - CORRECT 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? - CORRECT ANSWER - solid, gas,
semiconductor
What type of active medium is used in Er: YAG? - CORRECT 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? - CORRECT
ANSWER - CO2
Diode lasers have what type of active medium? - CORRECT ANSWER - semiconductor
what photons form the laser? - CORRECT ANSWER - light that leaks from the output
coupler
Stimulated emission: - CORRECT 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.
