Related articles:
Atomic spectral line
Spontaneous emission
Excited state
Optical amplifier
Laser
Maser
Photon
Atom
Light
Optics
Key terms:
math
nu
z
photons
atom
gamma
intensity
cdot
electrons
gain
equation
stimulated emission
optical
frequency
excited state
input
energy level
decay
ln
cdot z
spectral line
medium
emitted
line shape function
saturation intensity
nucleus
ground state
other photons
laser
general gain equation
sigma
spontaneous emission
variables
amplifier
einstein
wavelength
square meter
differential equation
absorption
population inversion
coefficient
over dz
same frequency
optical amplification
pi
small signal gain
lorentzian
delta n
electromagnetic
input intensity
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