Tunable circularly polarized lasing emission in reflection distributed feedback dye lasers.
A tunable circularly polarized distributed feedback (DFB) laser based on reflection grating configuration was realized in a solution of 4- (dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) doped methanol. Chiral photonic DFB structures with tunable photonic bandgap were generated by controlling the state of polarization of the two interfering pump beams. The dual-peak lasing emission spectrum indicates that the periodic chiral DFB grating is affected by a combination of modulations of gain and refractive index.
Chen
Fei
F
Laboratoire POMA, FRE CNRS 2988, Université d'Angers, 2 Boulevard Lavoisier, 49045 Angers, France.
Gindre
Denis
D
Nunzi
Jean-Michel
JM
D004396:Coloring Agents / Q000737:chemistry; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D012031:Refractometry / Q000295:instrumentation*
D004396:Coloring Agents