Physics & Astronomy
differential absorption lidar
100%
parametric amplifiers
65%
greenhouses
61%
telescopes
46%
optical radar
46%
wavelengths
29%
receivers
29%
gases
22%
carbon dioxide
22%
methane
19%
solid state lasers
18%
detectors
18%
lasers
17%
semiconductor lasers
17%
photodiodes
16%
distributed feedback lasers
16%
mirrors
11%
sensitivity
10%
injection
10%
remote sensing
9%
output
9%
cavities
8%
piezoelectric actuators
8%
avalanches
8%
safety
8%
inoculation
7%
laser outputs
7%
cells
7%
locking
6%
telecommunication
6%
acquisition
6%
photometers
6%
critical temperature
6%
optics
5%
atmospheres
5%
Engineering & Materials Science
Optical radar
88%
Optical parametric oscillators
73%
Carbon dioxide
43%
Aerosols
42%
Transmitters
29%
Lasers
26%
Climate change
19%
Remote sensing
18%
Greenhouse gases
18%
Scattering
16%
Monitoring
16%
Wavelength
10%
Laser tuning
9%
Troposphere
9%
Avalanche photodiodes
9%
Clouds
7%
Molecules
5%
Boundary layers
5%