Conference paper
New scanning probe microscopies: status and prospects
D. Pohl
Institute of Physics Electron Microscopy and Analysis Group Conference 1991
Spectral quasi-coincidences between absorption lines of molecules and laser-emission lines have been widely used for the detection of pollutants. We describe a new detection scheme which exploits the fact that an absorbed laser beam creates a change of refractive index in the gas because of heating. This change is monitored by a second laser beam with different wavelength intersecting the first one. The capabilities of this method include high sensitivity, high spatial resolution and contact-free operation. © 1979.
D. Pohl
Institute of Physics Electron Microscopy and Analysis Group Conference 1991
D. Pohl, L. Novotny, et al.
Thin Solid Films
D. Pohl
Solid State Communications
D. Pohl, V. Irniger, et al.
Applied Physics