Accession Number : ADA264339


Title :   Applications of the Photorefractive Effect and Damage Induced Effects in Fibers


Descriptive Note : Final rept. 1 Mar 90-31 Oct 92,


Corporate Author : COLORADO UNIV AT BOULDER DEPT OF PHYSICS AND ASTROPHYSICS


Personal Author(s) : Anderson, Dana Z


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264339.pdf


Report Date : 31 Oct 1992


Pagination or Media Count : 34


Abstract : This focus is two-fold. One aspect concerns photoinduced effects in fibers, especially the processes of self-organized second-harmonic generation in fibers. For the most part we have developed the microscopic theory of defect formation in glass. The basic physics involved in second-harmonic generation in fibers has to led to a number other possible experiments and applications. For example it is known that a photogenerated current cannot be produced by a single optical beam illuminating a centrosymmetric medium but it is now recognized that a current can be generated in a centrosymmetric medium by illumination with two harmonically related optical fields. However, we have concluded that as an application, self-organized second-harmonic generation in fibers does not appear to be a practical means of frequency doubling conventional lasers. Thus until a conceptual or practical breakthrough occurs, we have brought to a close the experimental and theoretical work on this subject


Descriptors :   *FIBER OPTICS , *GRATINGS(SPECTRA) , *GLASS FIBERS , FIBERS , RESONATORS , OPTICAL FILTERS , DOPING , DEFECTS(MATERIALS) , SECOND HARMONIC GENERATION


Subject Categories : Refractory Fibers
      Fiber Optics and Integrated Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE