Physics & Astronomy
quantum cascade lasers
100%
Green's functions
39%
cascades
21%
superlattices
17%
roughness
17%
simulation
16%
harmonic generations
16%
harmonics
12%
conductivity
10%
insects
10%
lasing
10%
formalism
10%
lasers
9%
electron scattering
9%
semiconductor devices
8%
optical waveguides
8%
scattering
8%
injection
8%
frequency modulation
8%
ignition
7%
brain
7%
trends
7%
screening
7%
oscillations
6%
plasmons
6%
nanowires
6%
electric fields
6%
inversions
5%
approximation
5%
degradation
5%
Engineering & Materials Science
Quantum cascade lasers
54%
Nanowires
30%
Optoelectronic devices
24%
Semiconductor superlattices
18%
Green's function
17%
Waveguides
16%
Superlattices
15%
Optical gain
14%
Harmonic generation
12%
Heterojunctions
10%
Brain
10%
Fiber optic networks
8%
Broadcasting
8%
Neural networks
8%
Electric fields
7%
Ignition
7%
Semiconductor materials
7%
Networks (circuits)
6%
Detectors
6%
Boltzmann equation
6%