MODULATION OF COHERENT TRANSIENT EFFECTS BY HETERODYNE FIELDS IN STARK AND FREQUENCY SWITCHING.

• Main Author: SOTO-MANRIQUEZ, JOSE.
• Other Authors: Shoemaker, Richard L.
• Language: en
• Published: The University of Arizona. 1983
• Subjects: Nuclear magnetic resonance.; Photon echoes.; Nutation.; Optical resonance.
• Online Access: http://hdl.handle.net/10150/187036

Coherent transient effects are the optical analogs of the many transient phenomena seen in pulsed nuclear magnetic resonance experiments on spin systems. For example, photon-echo and optical nutation are the respective optical equivalents of spin echo and transient nutation of nuclear magnetic resonance. In Stark-switching and frequency-switching techniques the laser field and the molecules are brought into resonance in a sequence of pulses, the rest of the time they remain well off-resonance. So far it has been assumed that the off-resonance field does not have any measureable influence on the experimental results and is utilized to implement a very efficient detection scheme. This work discusses how the off-resonance field affects the coherent transient effects. It is shown here how this field, by inducing changes in the index of refraction as small as 10⁻⁶ produces easily observable effects in photon echo and delayed optical nutation.