ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A holographic relaxation spectrometer is described which incorporates high-frequency phase modulation of the probe or reference beams by means of an electro-optic modulator. Heterodyne detection at the modulation frequency or two times the modulation frequency provides signals that are proportional to the electric field amplitude of the diffracted light. This system permits heterodyne detection of a transient diffraction signal in a single-shot experiment. The requirements for phase stability are somewhat relaxed and samples that deteriorate under laser irradiation can be studied. Diffraction amplitudes for the phase and absorbance components of laser-induced gratings can be recorded separately under certain conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1142276
