title: Energy transfer distributed feedback dye laser using Rhodamine B-Acid blue 7 dye mixture.
abstract: The characteristics of energy transfer distributed feedback dye laser (ETDFDL) are studied both theoretically and experimentally in a mixture of Rhodamine B and Acid blue 7 dyes pumped by 532 nm Nd:YAG laser. The behaviour of donor and acceptor DFDL, the dependence of their pulse width and output power on pump power and donor-acceptor concentrations are studied. Experimentally, the tunability is achieved over the spectral range 565-680 nm using a prism dye cell arrangement. The output energy of DFDL is measured at the emission peaks of donor and acceptor for different pump powers and donor-acceptor concentrations. The output pulse of DFDL is found to be as narrow as 40-ps duration, which is nearly 100-fold shorter than the pump pulse. The pulse linewidth is of the order of 0.1 A.
authors.affiliation: Department of Physics, Crescent Engineering College, Chennai 600 048, India.
authors.forename: M Basheer
authors.initials: MB
authors.lastname: Ahamed
authors.forename: P K
authors.initials: PK
authors.lastname: Palanisamy
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D004735:Energy Transfer; D007834:Lasers; D012235:Rhodamines / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D012235:Rhodamines; C029773:rhodamine B