We have observed polarization-resolved coherent beam combination via nondegenerate two-wave mixing in water-glycerol suspensions of shaped polytetrafluoroethylene microparticles. Experiments detect coherent energy transfer arising from two different types of moving index gratings: translational and orientational. Additionally, the dependence of the two-wave mixing gain coefficient on the frequency-difference of the beams, pump intensity and microparticle volume fraction was measured and found to be in accord with theory. Finally, beam combination was also achieved by using degenerate laser beams and moving the suspension relative to the laser interference pattern.
Pizzoferrato, R., De Spirito, M., Zammit, U., Marinelli, M., Rogovin, D., Scholl, J. (1991). Nondegenerate two-wave mixing in shaped microparticle suspensions. In Proceedings of SPIE - The International Society for Optical Engineering (pp.192-201). Bellingham, WA, United States : Publ by Int Soc for Optical Engineering.
Nondegenerate two-wave mixing in shaped microparticle suspensions
PIZZOFERRATO, ROBERTO;ZAMMIT, UGO;MARINELLI, MASSIMO;
1991-01-01
Abstract
We have observed polarization-resolved coherent beam combination via nondegenerate two-wave mixing in water-glycerol suspensions of shaped polytetrafluoroethylene microparticles. Experiments detect coherent energy transfer arising from two different types of moving index gratings: translational and orientational. Additionally, the dependence of the two-wave mixing gain coefficient on the frequency-difference of the beams, pump intensity and microparticle volume fraction was measured and found to be in accord with theory. Finally, beam combination was also achieved by using degenerate laser beams and moving the suspension relative to the laser interference pattern.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
