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Terms in this set (99)
Theorized the concept of stimulated Einstein
emission
Theorized that an excited electron Bohr
will spontaneously return to its
ground state
First ruby laser was created in _____ by 1960, Ted Maiman
______.
_________ reported in 1965 that a ruby Stern and Sognnaes
laser could vaporize enamel.
First pulsed Nd:YAG laser released in 1990, soft tissue
______ and cuts ______ tissue.
In _____ the first dental hard tissue was 1997
FDA cleared and is called _______. And Er: YAG laser
the ______ laser a year later. Er, Cr: YSGG
, The word LASER is an acronym Light Amplification by Stimulated Emission of
standing for _________. Radiation
Laser parameters include what 3 1)Duration of exposure
things? 2)Fiber Diameter
3)Wavelength
Lasers are: monochromatic: made of a single wavelength
______chromatic? (visible or infrared)
_____directional? unidirectional
coherent or noncoherent? coherent (all peaks and valleys of each wave travel
emitted from a stimulated ____________. in unison)
active medium
What states can the active medium solid, gas, semiconductor
be in?
What type of active medium is used solid state using crystal matrix (erbium laced
in Er: YAG? yttrium, aluminum and garnet)
What type of gas is used when the CO2
active medium is sealed in an air tight
chamber?
Diode lasers have what type of semiconductor
active medium?
what photons form the laser? light that leaks from the output coupler
Stimulated emission: 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.