Browsing by Author "Chen, Fei"
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Item Open Access Tunable circularly polarized lasing emission in distributed feedback dye lasers(Optical Society of America (OSA), 2008-10-13T00:00:00Z) Chen, Fei; Gindre, Denis; Nunzi, Jean-MichelA 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.