Physics & Astronomy
backward waves
100%
oscillators
76%
lasers
35%
pulses
34%
axial modes
31%
simulation
30%
electrons
28%
electron acceleration
21%
injection
21%
tuning
20%
cells
19%
profiles
17%
oscillations
17%
traveling wave amplifiers
15%
amplifiers
13%
modulation
13%
magnetic fields
13%
fibers
12%
waveguides
12%
interactions
12%
power amplifiers
12%
ions
12%
energy
11%
output
11%
radiation pressure
11%
scaling
10%
foils
10%
masers
10%
laser plasmas
10%
plasma density
10%
cyclotrons
9%
protons
9%
diodes
9%
space charge
9%
repetition
8%
injection locking
8%
beam currents
8%
fiber lasers
7%
bandwidth
7%
thresholds
7%
broadband
7%
proton energy
7%
nonlinear optics
6%
augmentation
6%
Child-Langmuir law
6%
laser beams
6%
field emission
6%
electric potential
6%
ponderomotive forces
6%
self consistent fields
5%
Engineering & Materials Science
Electrons
19%
Cyclotrons
18%
Laser produced plasmas
17%
Fibers
15%
Modulation
14%
Masers
14%
Field emission
13%
Fiber lasers
13%
Lasers
13%
Tuning
12%
Diodes
12%
Magnetic fields
12%
Laser pulses
11%
Fiber amplifiers
11%
Power amplifiers
10%
Light amplifiers
9%
Amplification
8%
Stimulated Raman scattering
8%
Plasma filled waveguides
8%
Electric space charge
7%
Supercontinuum generation
7%
Conversion efficiency
7%
Horn antennas
6%
Experiments
6%
Ultraviolet spectrometers
6%
Seed
6%
Electron cyclotron resonance
6%
Anodes
6%
Wavelength
6%
Electric potential
6%
Microwaves
5%
Spontaneous emission
5%
Neutron scattering
5%
Feedback
5%
Light emission
5%
Micelles
5%
Full width at half maximum
5%