Title :
Strong self-defocusing and four-wave mixing in bacteriorhodopsin
Author :
Werner, Ofer ; Fischer, Baruch
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
The authors find a strong self-defocusing effect in Bacteriorhodopsin in a polyvinylalcohol (polymer) matrix for a Gaussian beam with powers of tens of mW. They also demonstrate efficient four-wave mixing with phase conjugate reflectivities of ~26%. The effects are due to very large dispersive nonlinearities of the protein in the near infrared. Several possible mechanisms to explain these high nonlinearities are proposed and studied
Keywords :
molecular biophysics; multiwave mixing; optical dispersion; optical films; optical phase conjugation; optical self-focusing; proteins; 6 to 500 mW; 700 to 1000 nm; Gaussian beam; PVA matrix; bacteriorhodopsin; dispersive nonlinearities; four-wave mixing; strong self-defocusing; Absorption; Four-wave mixing; Holographic optical components; Holography; Laser beams; Laser modes; Nonlinear optics; Optical films; Power lasers; Reflectivity;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 1991. Proceedings., 17th Convention of
Conference_Location :
Tel Aviv
Print_ISBN :
0-87942-678-0
DOI :
10.1109/EEIS.1991.217677
